Navigating Photos in Develop Module is slow

Report · Dec 15, 2025

I just purchased a new computer and installed LR Classic but switching from one photo to the next in the develop module is incredibly slow. I've optimized the catalog; Purged the cache and set the cach settings to a 100GB Maxium Size; from the NVIDIA App I optimized for Adobe Lightroom Classic; I've enabled Smart Previews; LR Catalog resides on the SSD; but it is so slow going from one photo to the next. I feel like I have wasted nearly $2K on this new computer:

HP OMEN 35L Gaming Desktop

AMD Ryzen 7 8700F 2024

32GB DDR5 Memory

NVIDIA GeForce RTX 5070 WINDFORCE OC SFF 12G Graphics Card, 12GB 192-bit GDDR7, PCIe 5.0

Any suggestions? Many thanks for your assistance.

Report · Dec 15, 2025

There are many posts about LR 15 being very sluggish moving photo to photo in Develop and sometimes Library Loupe. There are propbably multiple causes with similar symptoms. Here's my compendium of magic spells that have each helped at least a couple of people:

https://www.lightroomqueen.com/community/threads/magic-spells-for-sluggish-lr-15.54013/

Report · Dec 16, 2025

Thank you very much for that--I have gone through your checklist and done everything you suggested. However, it still takes anywhere from 2-3s when toggling between photos in the Develop module. I'm just curious if that is what you and others are experiencing as well and if this is considered to be the "new norm"? I have noticed that while in the Develop Module, under the Navigator on the left, the photos instantly populate if I just hover over them, but when I click on one, it immediately populates under the Navigator but it takes 2-3s before it shows up in the main window. And I've also seen instances where after selecting a new image, the main window still shows the previous image that was worked on while the navigator window shows the correct image. Since I have invested so much in this new computer, I am on the verge of replacing my monitors with ones that use Freesync to work with the NVIDIA card better. Do you think that will help? When looking for new monitors, is 4K the way to go for Lightroom or does that even matter? I am looking at getting this monitor but it isn't 4K: Samsung - 32" Odyssey G51F QHD 180Hz 1ms AMD FreeSync Gaming Monitor with HDR10 (DisplayPort, HDMI).

Thank you again for your help

Report · Dec 16, 2025

Well, let me jump in here. This may not be the same as the answer @johnrellis would give, but I don't think a new monitor would help. I have heard that on some computers, a 4K monitor makes LrC slower on some tasks, including switching from one image to the next in the develop module. You didn't mention the size in pixels that the images from your camera takes — higher MP images can also be the cause of slowness.

The slowness you described, 2-3 seconds between images, was what I was experiencing on occasion and other times it was faster on my old computer. I just got a new computer, with faster hardware compared to the old computer, and I don't see this slowness any more, moving between images in the Develop module now takes under 1 second (although the new computer hasn't really been heavily tested yet, no long editing sessions in the 2 days I have had the new computer).

Report · Dec 16, 2025

Hi, the steps mentioned in the link shared by Johnrellis should help, but if you're still experiencing some lag, please go to the Help menu in Lightroom Classic, then System Info, and copy the text. You can share the info with us by either pasting it as a reply here or in a text file and sharing the file with us.

This may provide us with better insights into the setup. Also, just to test, try creating a new catalog and importing a few images into it to see if you see a difference in performance.

Thanks,
Nikunj

Report · Dec 16, 2025

I actually tried a new catalog yesterday and the same thing is happening. Here is the System Info. Again, I really appreciate your help:

Lightroom Classic version: 15.1 [ 202512101606-1bb801a8 ]

License: Creative Cloud

Language setting: en

Operating system: Windows 11 - Home Premium Edition

Version: 11.0.26200

Application architecture: x64

System architecture: x64

Logical processor count: 16

Processor speed: 4.1GHz

SqLite Version: 3.36.0

Adobe GSDK Version: 1.4.0.171

CPU Utilisation: 2.0%

Power Source: Plugged In

Built-in memory: 32331.7 MB

Dedicated GPU memory used by Lightroom: 272.6MB / 11943.0MB (2%)

Real memory available to Lightroom: 32331.7 MB

Real memory used by Lightroom: 1202.8 MB (3.7%)

Virtual memory used by Lightroom: 2055.2 MB

GDI objects count: 857

USER objects count: 3395

Process handles count: 2882

Memory cache size: 0.0MB

Internal Camera Raw version: 18.1 [ 2420 ]

Maximum thread count used by Camera Raw: 5

Camera Raw SIMD optimization: SSE2,AVX,AVX2

Camera Raw virtual memory: 294MB / 16165MB (1%)

Camera Raw real memory: 380MB / 32331MB (1%)

Cache1:

NT- RAM:0.0MB, VRAM:0.0MB, Combined:0.0MB

Cache2:

m:0.0MB, n:0.0MB

U-main: 111.0MB

System DPI setting: 96 DPI

Desktop composition enabled: Yes

Standard Preview Size: 1440 pixels

Displays: 1) 1920x1080, 2) 1920x1080

Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info:

DirectX: NVIDIA GeForce RTX 5070 (32.0.15.9144)

Init State: GPU for Export supported by default

User Preference: GPU for Export enabled

Enable HDR in Library: ON

GPU for Preview Generation: On (S5_11)

Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic

Library Path: C:\Users\floyd\Lightroom\LightroomCatalog-v13-3.lrcat

Settings Folder: C:\Users\floyd\AppData\Roaming\Adobe\Lightroom

Installed Plugins:

1) SmugMug

Config.lua flags:

Adapter #1: Vendor : 10de

Device : 2f04

Subsystem : 8e42103c

Revision : a1

Video Memory : 11943

Adapter #2: Vendor : 1414

Device : 8c

Subsystem : 0

Revision : 0

Video Memory : 0

AudioDeviceIOBlockSize: 1024

AudioDeviceName: System Default - Speakers (Left Bose Revolve+ II SoundLink)

AudioDeviceNumberOfChannels: 2

AudioDeviceSampleRate: 44100

Build: LR5x26

Direct2DEnabled: false

GL_ACCUM_ALPHA_BITS: 16

GL_ACCUM_BLUE_BITS: 16

GL_ACCUM_GREEN_BITS: 16

GL_ACCUM_RED_BITS: 16

GL_ALPHA_BITS: 0

GL_BLUE_BITS: 8

GL_DEPTH_BITS: 24

GL_GREEN_BITS: 8

GL_MAX_3D_TEXTURE_SIZE: 16384

GL_MAX_TEXTURE_SIZE: 32768

GL_MAX_TEXTURE_UNITS: 4

GL_MAX_VIEWPORT_DIMS: 32768,32768

GL_RED_BITS: 8

GL_RENDERER: NVIDIA GeForce RTX 5070/PCIe/SSE2

GL_SHADING_LANGUAGE_VERSION: 4.60 NVIDIA

GL_STENCIL_BITS: 8

GL_VENDOR: NVIDIA Corporation

GL_VERSION: 4.6.0 NVIDIA 591.44

GPUDeviceEnabled: false

OGLEnabled: true

GL_EXTENSIONS: GL_AMD_multi_draw_indirect GL_AMD_seamless_cubemap_per_texture GL_AMD_vertex_shader_viewport_index GL_AMD_vertex_shader_layer GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_bindless_texture GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compatibility GL_ARB_compressed_texture_pixel_storage GL_ARB_conservative_depth GL_ARB_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_ES2_compatibility GL_ARB_ES3_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility 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GL_EXT_framebuffer_multisample GL_EXTX_framebuffer_mixed_formats GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_geometry_shader4 GL_EXT_gpu_program_parameters GL_EXT_gpu_shader4 GL_EXT_multi_draw_arrays GL_EXT_multiview_texture_multisample GL_EXT_multiview_timer_query GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_packed_pixels GL_EXT_pixel_buffer_object GL_EXT_point_parameters GL_EXT_polygon_offset_clamp GL_EXT_post_depth_coverage GL_EXT_provoking_vertex GL_EXT_raster_multisample GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_shader_objects GL_EXT_separate_specular_color GL_EXT_shader_image_load_formatted GL_EXT_shader_image_load_store GL_EXT_shader_integer_mix GL_EXT_shadow_funcs GL_EXT_sparse_texture2 GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture3D GL_EXT_texture_array GL_EXT_texture_buffer_object GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_latc GL_EXT_texture_compression_rgtc 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Report · Dec 17, 2025

Hi @FSchleyhahn,

Thanks for sharing the detailed system info and for testing with a new catalog, that really helps narrow things down. Based on what you’re describing and what we’re seeing more broadly with Lightroom Classic 15.x, a 2–3 second delay when switching images in Develop is not expected, especially on hardware like yours. This isn’t related to monitors or FreeSync, so upgrading displays (4K or otherwise) is very unlikely to improve this behavior.

A few focused things to try next:

• Temporarily disable GPU for Preview Generation. Go to Preferences > Performance and set GPU for Preview Generation to Off, then restart Lightroom and test navigation again.

• You currently have Enable HDR in Library set to ON. Please turn this OFF and test again.

• Your Standard Preview size is set to 1440 pixels while you’re using dual 1080p displays. Try setting this to 1024 pixels under Catalog Settings.

• Temporarily disable the SmugMug plugin and restart Lightroom to rule out background hooks.

If possible, one last helpful data point would be:

• A short screen recording showing the delay when switching images in Develop (Navigator updates instantly, main view lags)

Once I have that, I’ll pass everything along for deeper review.

Best regards,

Anshul Saini

Report · Dec 17, 2025

Hi @Anshul_Saini and thank you so much for your help. The only change I made since yesterday was getting new 32" monitors (they aren't 4K but they are using a digitalport connection as opposed to HDMI). So, these are my settings right now:

Standard Preview Size: 1024 pixels

Displays: 1) 2560x1440, 2) 2560x1440

Should I keep that 1024 as the Standard Preview Size?

In any event, with the exception of the video which I will work on soon, I made all the other changes you suggested and there is still that delay when toggling between photos in the Develop Module.

Report · Dec 17, 2025

Should I keep that 1024 as the Standard Preview Size?

The previews in the preview cache are not used to produce the image you see in the Develop Module. LrC computes a new preview for each photo that is to be viewed in the Develop Module.

However @Anshul_Saini implies the opposite, that the previews LrC generates for the preview cache are used in the Develop Module. Could you please comment on this, @Anshul_Saini ?

@FSchleyhahn please tell us the size of your original images in pixels (width and height) and not megabytes.

Report · Dec 17, 2025

3360x2240

Report · Dec 17, 2025

Thanks, then I doubt that the size of your photos is the problem. Perhaps if you had 61 MP or 100 MP photos maybe that might a cause of slowness.

Report · Dec 17, 2025

Thanks for the update, @FSchleyhahn, and for sharing the video link. I’m unable to access that screen recording. Could you please re-share it using a link that’s viewable by anyone?

Based on where we are now, let’s take this in a clean, structured order to rule things out properly:

• Please confirm you have temporarily disabled the SmugMug plugin, then restarted Lightroom Classic.
• Confirm whether turning the GPU off in Preferences > Performance made any difference.
• Also confirm whether HDR was turned off and if that changed behavior.

To answer the point raised by @dj_paige: preview size does not affect the Develop rendering directly. My earlier suggestion around preview size was only to rule out background catalog activity, not because Develop uses standard previews.

Next steps, in this exact order:

• Go to File > Optimize Catalog, then restart Lightroom and test Develop navigation.
• Create a brand-new test catalog, import a small set of images, and test the development performance there.

• If the issue still exists, reset Lightroom Classic preferences (please back them up first).

If the delay remains after all of the above, then please generate a Diagnostic Log Bundle:
– Open Lightroom Classic
– Preferences > General
– Hold Alt and click Generate Diagnostic Report

Once you can re-share the screen recording and confirm the results of the steps above, I’ll escalate this to the product team with the full context and diagnostic logs.

Best regards,
Anshul Saini

Report · Dec 17, 2025

To answer the point raised by @dj_paige: preview size does not affect the Develop rendering directly. My earlier suggestion around preview size was only to rule out background catalog activity, not because Develop uses standard previews.

Best regards,
Anshul Saini

By @Anshul_Saini

Thank you for the explanation.

Report · Dec 18, 2025

Hi @Anshul_Saini:

1. I have confirmed that the SmugMug plugin is disabled

2. I made 2 videos: one with GPU on, and the other with GPU off. With GPU off, the image under the Develop Module does appear to show up faster, but it takes 2-3 seconds before the controls to process the image to apear (which is about the same time as it takes when GPU is on for the entire image to appear). Please let me know if you can see them. I tested from a computer where I am not signed into my OneDrive account and was able to view them both.

GPU On: GPU_On.mp4

GPU Off: GPU_Off.mp4

3. HDR was turned off and that didn't change the behavior

4. I created a new catalog and imported around 100 images and the exact same thing is happening

5. I am on the step now to reset the LR Classic preferences (but you mention to back them up first). By preferences, you are referring to all of the settings under Edit->Preferences, correct? If I backup that folder then delete it, how do I restore it? If I were to copy that folder back, wouldn't I be back in the same place before deleting the preferences? I want clarification on this step first before I proceed.

Again, thank you so much for all your help.

4. I created a new catalog and imported about 100 photos into it and the same thing is happening.

Report · Dec 18, 2025

@Anshul_Saini , I figured out how to backup the preferences, so I did reset them and the problem persists. I have generated the Diagnostic Report and it can be accessed from this OneDrive share: LrSyncDiagnostic.zip

Please let me know if you need anything else. Again, thanks for your help.

Report · Dec 18, 2025

Hi @FSchleyhahn,

Thank you for the detailed testing, screen recordings, and for sharing the diagnostic log bundle. I’ve received everything.

You’ve helped rule out catalog, preferences, GPU configuration, plugins, and display setup, which gives us a very clear picture. I’ve summarized your findings and passed the logs, videos, and full context to the product team for review.

At this point, there’s nothing further I need you to test. If the team needs additional information or files, I’ll reach out. Otherwise, I’ll update you as soon as I have news to share.

I appreciate the time and patience you’ve put into this.

Best regards,

Anshul Saini

Report · Dec 18, 2025

@Anshul_Saini , thank you. I will keep an eye out for an update. I can't wait!

Out of curiosity, have you seen this behavior before?

Report · Dec 19, 2025

Thanks for checking back in, @@FSchleyhahn. To answer your question directly and transparently:

• I’m relatively new to actively supporting users in the Lightroom Community, although I’ve worked with Lightroom and Photoshop for many years personally

• I haven’t personally seen this exact Develop-module lag reported in this specific form before, especially not on hardware as capable as yours

What I have seen, including in external YouTube benchmarking and review videos, is that this kind of delay usually shows up on lower-end or budget systems. Given that your setup is a high-end, modern machine, this behavior is clearly not expected and not something I would consider normal.

At this point your reports, logs, and recordings have been shared with the product team.We’re waiting for their analysis and guidance on next steps or fixes. I’ll follow up with you as soon as I hear back, or if they need anything further

Thanks again for the time and patience you’ve put into helping us investigate this properly. And wishing you a great holiday season in advance.

Best regards,

Anshul Saini

Report · Dec 28, 2025

@Anshul_Saini, I would like to update you with where I am with this issue. I had initially purchased the HP OMEN 35L Gaming Desktop with an AMD Ryzen 7 8700 2024 processor and NVIDIA GeForce RTX 5070 graphics card. When I saw that the HP OMEN 35L Gaming Desktop with an Intel Core i7-14700F 2024 processor and NVIDIA GeForce RTX 5070 Ti went on sale for only about $200 more than what I had paid for the initial desktop, I decided to return the AMD box and buy the Intel box. I went through the whole process of reloading all my software from scratch just like I had done with the AMD box (I have a spreadsheet where I keep track of everything I need to install and any settings I need to apply) so both boxes were setup the same. However, this laggy issue that I described and illustrated in the video is completely gone. I don't know if it was the processor change or the graphics card change that caused it. Here are my settings now. I just would like to thank you and everyone else who chimed in to help me with this. Thanks again.

Lightroom Classic version: 15.1 [ 202512101606-1bb801a8 ]

License: Creative Cloud

Language setting: en

Operating system: Windows 11 - Home Premium Edition

Version: 11.0.26200

Application architecture: x64

System architecture: x64

Logical processor count: 28

Processor speed: 2.1GHz

SqLite Version: 3.36.0

Adobe GSDK Version: 1.4.0.171

CPU Utilisation: 1.0%

Power Source: Plugged In

Built-in memory: 32520.0 MB

Dedicated GPU memory used by Lightroom: 890.9MB / 15995.0MB (5%)

Real memory available to Lightroom: 32520.0 MB

Real memory used by Lightroom: 3528.7 MB (10.8%)

Virtual memory used by Lightroom: 6322.3 MB

GDI objects count: 1287

USER objects count: 3495

Process handles count: 6479

Memory cache size: 780.4MB

Internal Camera Raw version: 18.1 [ 2420 ]

Maximum thread count used by Camera Raw: 5

Camera Raw SIMD optimization: SSE2,AVX,AVX2

Camera Raw virtual memory: 1348MB / 16260MB (8%)

Camera Raw real memory: 1542MB / 32520MB (4%)

Cache1:

Final1- RAM:329.0MB, VRAM:0.0MB, Sri Lanka (2954).dng

NT- RAM:329.0MB, VRAM:0.0MB, Combined:329.0MB

Cache2:

m:780.4MB, n:60.7MB

U-main: 144.0MB

System DPI setting: 96 DPI

Desktop composition enabled: Yes

Standard Preview Size: 1440 pixels

Displays: 1) 2560x1440, 2) 2560x1440

Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info:

DirectX: NVIDIA GeForce RTX 5070 Ti (32.0.15.9144)

Init State: GPU for Export supported by default

User Preference: GPU for Image Processing Enabled

Enable HDR in Library: ON

GPU for Preview Generation: On (S5_15)

Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic

Library Path: C:\Users\floyd\Lightroom\LightroomCatalog-v13-3.lrcat

Settings Folder: C:\Users\floyd\AppData\Roaming\Adobe\Lightroom

Installed Plugins:

1) SmugMug

Config.lua flags:

Adapter #1: Vendor : 10de

Device : 2c05

Subsystem : 8e4b103c

Revision : a1

Video Memory : 15995

Adapter #2: Vendor : 1414

Device : 8c

Subsystem : 0

Revision : 0

Video Memory : 0

AudioDeviceIOBlockSize: 1024

AudioDeviceName: System Default - Speakers (Left Bose Revolve+ II SoundLink)

AudioDeviceNumberOfChannels: 2

AudioDeviceSampleRate: 44100

Build: LR5x26

Direct2DEnabled: false

GL_ACCUM_ALPHA_BITS: 16

GL_ACCUM_BLUE_BITS: 16

GL_ACCUM_GREEN_BITS: 16

GL_ACCUM_RED_BITS: 16

GL_ALPHA_BITS: 0

GL_BLUE_BITS: 8

GL_DEPTH_BITS: 24

GL_GREEN_BITS: 8

GL_MAX_3D_TEXTURE_SIZE: 16384

GL_MAX_TEXTURE_SIZE: 32768

GL_MAX_TEXTURE_UNITS: 4

GL_MAX_VIEWPORT_DIMS: 32768,32768

GL_RED_BITS: 8

GL_RENDERER: NVIDIA GeForce RTX 5070 Ti/PCIe/SSE2

GL_SHADING_LANGUAGE_VERSION: 4.60 NVIDIA

GL_STENCIL_BITS: 8

GL_VENDOR: NVIDIA Corporation

GL_VERSION: 4.6.0 NVIDIA 591.44

GPUDeviceEnabled: false

OGLEnabled: true

GL_EXTENSIONS: GL_AMD_multi_draw_indirect GL_AMD_seamless_cubemap_per_texture GL_AMD_vertex_shader_viewport_index GL_AMD_vertex_shader_layer GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_bindless_texture GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compatibility GL_ARB_compressed_texture_pixel_storage GL_ARB_conservative_depth GL_ARB_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_ES2_compatibility GL_ARB_ES3_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_layer_viewport GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_fragment_shader_interlock GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_geometry_shader4 GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_gl_spirv GL_ARB_gpu_shader5 GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader_int64 GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_imaging GL_ARB_indirect_parameters GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_internalformat_query2 GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multi_draw_indirect GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_occlusion_query2 GL_ARB_parallel_shader_compile GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_polygon_offset_clamp GL_ARB_post_depth_coverage GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_sample_locations GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_seamless_cubemap_per_texture GL_ARB_separate_shader_objects GL_ARB_shader_atomic_counter_ops GL_ARB_shader_atomic_counters GL_ARB_shader_ballot GL_ARB_shader_bit_encoding GL_ARB_shader_clock GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shader_image_load_store GL_ARB_shader_image_size GL_ARB_shader_objects GL_ARB_shader_precision GL_ARB_shader_storage_buffer_object GL_ARB_shader_subroutine GL_ARB_shader_texture_image_samples GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shader_viewport_layer_array GL_ARB_shading_language_420pack GL_ARB_shading_language_include GL_ARB_shading_language_packing GL_ARB_shadow GL_ARB_sparse_buffer GL_ARB_sparse_texture GL_ARB_sparse_texture2 GL_ARB_sparse_texture_clamp GL_ARB_spirv_extensions GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_tessellation_shader GL_ARB_texture_barrier GL_ARB_texture_border_clamp GL_ARB_texture_buffer_object GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_buffer_range GL_ARB_texture_compression GL_ARB_texture_compression_bptc GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_cube_map_array GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_filter_anisotropic GL_ARB_texture_filter_minmax GL_ARB_texture_float GL_ARB_texture_gather GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_mirrored_repeat GL_ARB_texture_multisample GL_ARB_texture_non_power_of_two GL_ARB_texture_query_levels GL_ARB_texture_query_lod GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_texture_rgb10_a2ui GL_ARB_texture_stencil8 GL_ARB_texture_storage GL_ARB_texture_storage_multisample GL_ARB_texture_swizzle GL_ARB_texture_view GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_transform_feedback_instanced GL_ARB_transform_feedback_overflow_query GL_ARB_transpose_matrix GL_ARB_uniform_buffer_object GL_ARB_vertex_array_bgra GL_ARB_vertex_array_object GL_ARB_vertex_attrib_64bit GL_ARB_vertex_attrib_binding GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_vertex_type_10f_11f_11f_rev GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_ARB_window_pos GL_ATI_draw_buffers GL_ATI_texture_float GL_ATI_texture_mirror_once GL_S3_s3tc GL_EXT_texture_env_add GL_EXT_abgr GL_EXT_bgra GL_EXT_bindable_uniform GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_compiled_vertex_array GL_EXT_Cg_shader GL_EXT_depth_bounds_test GL_EXT_direct_state_access GL_EXT_draw_buffers2 GL_EXT_draw_instanced GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXTX_framebuffer_mixed_formats GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_geometry_shader4 GL_EXT_gpu_program_parameters GL_EXT_gpu_shader4 GL_EXT_multi_draw_arrays GL_EXT_multiview_texture_multisample GL_EXT_multiview_timer_query GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_packed_pixels GL_EXT_pixel_buffer_object GL_EXT_point_parameters GL_EXT_polygon_offset_clamp GL_EXT_post_depth_coverage GL_EXT_provoking_vertex GL_EXT_raster_multisample GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_shader_objects GL_EXT_separate_specular_color GL_EXT_shader_image_load_formatted GL_EXT_shader_image_load_store GL_EXT_shader_integer_mix GL_EXT_shadow_funcs GL_EXT_sparse_texture2 GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture3D GL_EXT_texture_array GL_EXT_texture_buffer_object GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_latc GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_cube_map GL_EXT_texture_edge_clamp GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_EXT_texture_filter_anisotropic GL_EXT_texture_filter_minmax GL_EXT_texture_integer GL_EXT_texture_lod GL_EXT_texture_lod_bias GL_EXT_texture_mirror_clamp GL_EXT_texture_object GL_EXT_texture_shadow_lod GL_EXT_texture_shared_exponent GL_EXT_texture_sRGB GL_EXT_texture_sRGB_R8 GL_EXT_texture_sRGB_decode GL_EXT_texture_storage GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback2 GL_EXT_vertex_array GL_EXT_vertex_array_bgra GL_EXT_vertex_attrib_64bit GL_EXT_window_rectangles GL_EXT_import_sync_object GL_IBM_rasterpos_clip GL_IBM_texture_mirrored_repeat GL_KHR_context_flush_control GL_KHR_debug GL_EXT_memory_object GL_EXT_memory_object_win32 GL_NV_memory_object_sparse GL_EXT_win32_keyed_mutex GL_KHR_parallel_shader_compile GL_KHR_no_error GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_EXT_semaphore GL_EXT_semaphore_win32 GL_NV_timeline_semaphore GL_KHR_shader_subgroup GL_KTX_buffer_region GL_NV_alpha_to_coverage_dither_control GL_NV_bindless_multi_draw_indirect GL_NV_bindless_multi_draw_indirect_count GL_NV_bindless_texture GL_NV_blend_equation_advanced GL_NV_blend_equation_advanced_coherent GL_NVX_blend_equation_advanced_multi_draw_buffers GL_NV_blend_minmax_factor GL_NV_blend_square GL_NV_clip_space_w_scaling GL_NV_command_list GL_NV_compute_program5 GL_NV_compute_shader_derivatives GL_NV_conditional_render GL_NV_conservative_raster GL_NV_conservative_raster_dilate GL_NV_conservative_raster_pre_snap GL_NV_conservative_raster_pre_snap_triangles GL_NV_conservative_raster_underestimation GL_NV_copy_depth_to_color GL_NV_copy_image GL_NV_depth_buffer_float GL_NV_depth_clamp GL_NV_draw_texture GL_NV_draw_vulkan_image GL_NV_ES1_1_compatibility GL_NV_ES3_1_compatibility GL_NV_explicit_multisample GL_NV_feature_query GL_NV_fence GL_NV_fill_rectangle GL_NV_float_buffer GL_NV_fog_distance GL_NV_fragment_coverage_to_color GL_NV_fragment_program GL_NV_fragment_program_option GL_NV_fragment_program2 GL_NV_fragment_shader_barycentric GL_NV_fragment_shader_interlock GL_NV_framebuffer_mixed_samples GL_NV_framebuffer_multisample_coverage GL_NV_geometry_shader4 GL_NV_geometry_shader_passthrough GL_NV_gpu_program4 GL_NV_internalformat_sample_query GL_NV_gpu_program4_1 GL_NV_gpu_program5 GL_NV_gpu_program5_mem_extended GL_NV_gpu_program_fp64 GL_NV_gpu_program_multiview GL_NV_gpu_shader5 GL_NV_half_float GL_NV_light_max_exponent GL_NV_memory_attachment GL_NV_mesh_shader GL_NV_multisample_coverage GL_NV_multisample_filter_hint GL_NV_occlusion_query GL_NV_packed_depth_stencil GL_NV_parameter_buffer_object GL_NV_parameter_buffer_object2 GL_NV_path_rendering GL_NV_path_rendering_shared_edge GL_NV_pixel_data_range GL_NV_point_sprite GL_NV_primitive_restart GL_NV_primitive_shading_rate GL_NV_query_resource GL_NV_query_resource_tag GL_NV_register_combiners GL_NV_register_combiners2 GL_NV_representative_fragment_test GL_NV_sample_locations GL_NV_sample_mask_override_coverage GL_NV_scissor_exclusive GL_NV_shader_atomic_counters GL_NV_shader_atomic_float GL_NV_shader_atomic_float64 GL_NV_shader_atomic_fp16_vector GL_NV_shader_atomic_int64 GL_NV_shader_buffer_load GL_NV_shader_storage_buffer_object GL_NV_shader_subgroup_partitioned GL_NV_shader_texture_footprint GL_NV_shading_rate_image GL_NV_stereo_view_rendering GL_NV_texgen_reflection GL_NV_texture_barrier GL_NV_texture_compression_vtc GL_NV_texture_dirty_tile_map GL_NV_texture_env_combine4 GL_NV_texture_multisample GL_NV_texture_rectangle GL_NV_texture_rectangle_compressed GL_NV_texture_shader GL_NV_texture_shader2 GL_NV_texture_shader3 GL_NV_transform_feedback GL_NV_transform_feedback2 GL_NV_uniform_buffer_unified_memory GL_NV_uniform_buffer_std430_layout GL_NV_vertex_array_range GL_NV_vertex_array_range2 GL_NV_vertex_attrib_integer_64bit GL_NV_vertex_buffer_unified_memory GL_NV_vertex_program GL_NV_vertex_program1_1 GL_NV_vertex_program2 GL_NV_vertex_program2_option GL_NV_vertex_program3 GL_NV_viewport_array2 GL_NV_viewport_swizzle GL_NVX_conditional_render GL_NVX_linked_gpu_multicast GL_NV_gpu_multicast GL_NVX_gpu_multicast2 GL_NVX_progress_fence GL_NVX_gpu_memory_info GL_NVX_multigpu_info GL_NVX_nvenc_interop GL_NV_shader_thread_group GL_NV_shader_thread_shuffle GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_OVR_multiview GL_OVR_multiview2 GL_SGIS_generate_mipmap GL_SGIS_texture_lod GL_SGIX_depth_texture GL_SGIX_shadow GL_SUN_slice_accum GL_WIN_swap_hint WGL_EXT_swap_control

Report · Dec 29, 2025

Moderators, @Rikk Flohr: Photography, please merge with this thread about the same symptoms:

https://community.adobe.com/t5/lightroom-classic-discussions/lrc-15-slow/m-p/15646600

Report · Dec 17, 2025

Here is a link to the short video: 31FA3737-BF21-491E-81C5-C2497E0CE008.MP4

Report · Dec 16, 2025

There are many posts about LR 15 being very sluggish moving photo to photo in Develop and sometimes Library Loupe. There are propbably multiple causes with similar symptoms. Here's my compendium of magic spells that have each helped at least a couple of people:
https://www.lightroomqueen.com/community/threads/magic-spells-for-sluggish-lr-15.54013/

By @johnrellis

John, thank you for doing this — and all the other things you have done to help Lightroom Classic users as well.

Report · Dec 29, 2025

Lightoom 15 beacame paifully slow on a capable machine that worked brilliatly with Lightroom 14.5.1

I recorded the comaprison. The problem is ongoing and Adobe is in no rush to fix it.

Develop module is painfully slow to operate. I recorded the perfromce difference of 14.5.1 and 15.1

Our machines are more than adequate to go fast. This is embarrassing and unacceptable for such a large company. It's a known issue. Bring the performance back!

Watch the video demo below. I have many collegues with the same poor performance on much more capable computers. The issue is marked as resolved, BUT IT'S NOT. See for yourself.

https://youtu.be/VKK70V1MiF0

Report · Dec 29, 2025

There are many posts about LR 15 being very sluggish moving photo to photo in Develop and sometimes Library Loupe. There may be multiple causes with similar symptoms. Here's my compendium of magic spells that have each helped at least a couple of people:

https://www.lightroomqueen.com/community/threads/magic-spells-for-sluggish-lr-15.54013/

Report · Dec 29, 2025

Moderators, @Rikk Flohr: Photography, please merge with the existing thread about these symptoms:

https://community.adobe.com/t5/lightroom-classic-discussions/navigating-photos-in-develop-module-is-...