Upgraded GPU, now LrC maxes out VRAM and performs very poorly, especially with one or more masks

Report · Apr 13, 2025

PC is an i7-13700k, 96GB RAM, M.2 SSDs, GPU is NVidia 4070 Super 12GB

Prior to yesterday I have had the same configuration for one - two years except the GPU was NVidia 1660Ti 6GB.

Lightroom Classic had generally run okay but was slowing down with each update. Most have told me this is likely due to each release optimizing moreso for newer GPU technology. In the past month things got bad to the point that photos with a small handful of healing brush uses or masks would almost freeze up and take several minutes to render in the develop panel before allowing extremely slow and jerky editing. VRAM usage typically say around 5.5GB of the 6GB my card had. Swapping to another photo without masks/brushes would not decrease VRAM usage but would allow LrC to return to normal operation.

I upgraded to the 4070 Super yesterday. I installed as a clean install the newest driver from NVidia. Generally performance improved considerably including on photos I had trouble with before. VRAm was usually sitting around 11.2GB out of 12. However, for some other photos including for any with even one simple mask, VRAM usage would jump to 11.8 or 11.9 and the system would start crawling. Increasing the zoom in the develop panel became very stuttery. Trying to crop became too jerky to really do. Changing simple sliders like exposure or highlights or shadows became very stuttery and not smooth. Unlike before with my old 1660Ti card, now switching to a different photo would NOT restore performance to normal. Only restarting would.

Replacing the latest NVidia Studio driver with NVidia's latest Game-ready driver improved matters somewhat. With this change, VRAM usage would stay below 10GB for most photos and performance was okay. However, working on a photo with 1+ masks would again shoot VRAM up to 11.8GB or so and cause unworkable stutering which would not clear up by swapping to a different photo.

One person said they had the same experience and found it was a bug with LrC 14.2, so following this advice I downgraded to 14.1.1. This showed significant improvement. VRAM will now vary from 5GB to just below 10GB for most photos. It will sometimes climb above 11GB, but this does not necessarily cause poor performance. VRAM usage will also now drop down again, so it may go up to 11.5 but then later drop to 7. Working with photos with even one mask is still pushing the VRAM usage to 11+ and LrC becomes very difficult to use. Swapping to a different photo now does restore the performance, but only mostly. It is still not as smooth as it was before encountering problems with the masked photo. Ocassionally photos with no mask will cause the same problem.

As to typical suggestions: windows Hardware acceleration is turned off. Write to XMP is turned off. Camera Raw cache is 200GB. Here is my system info:

____

Lightroom Classic version: 14.1.1 [ 202412150940-551fb044 ]

License: Creative Cloud

Language setting: en

Operating system: Windows 10 - Business Edition

Version: 10.0.19045

Application architecture: x64

System architecture: x64

Logical processor count: 24

Processor speed: 3.4GHz

SqLite Version: 3.36.0

CPU Utilisation: 0.0%

Power Source: Plugged In

Built-in memory: 98063.8 MB

Dedicated GPU memory used by Lightroom: 6376.9MB / 11999.0MB (53%)

Real memory available to Lightroom: 98063.8 MB

Real memory used by Lightroom: 8064.8 MB (8.2%)

Virtual memory used by Lightroom: 16713.5 MB

GDI objects count: 1733

USER objects count: 3221

Process handles count: 8558

Memory cache size: 24398.8MB

Internal Camera Raw version: 17.1 [ 2098 ]

Maximum thread count used by Camera Raw: 5

Camera Raw SIMD optimization: SSE2,AVX,AVX2

Camera Raw virtual memory: 3835MB / 49031MB (7%)

Camera Raw real memory: -696080MB / 98063MB (-709%)

Cache1:

Final1- RAM:825.0MB, VRAM:4363.0MB, 20250413-DSC_7760-Enhanced-NR.dng

NT- RAM:825.0MB, VRAM:4363.0MB, Combined:5188.0MB

Cache2:

m:24398.8MB, n:352.2MB

U-main: 122.0MB

System DPI setting: 96 DPI

Desktop composition enabled: Yes

Standard Preview Size: 1936 pixels

Displays: 1) 1920x1200, 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 4070 SUPER (32.0.15.7283)

Init State: GPU for Export supported by default

User Preference: Auto

Enable HDR in Library: OFF

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

Library Path: C:\Users\Shane\Pictures\Lightroom\Lightroom Catalog-v13-3.lrcat

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

Installed Plugins:

1) AdobeStock

2) ColorChecker Camera Calibration

3) DxO PhotoLab 6

4) DxO PhotoLab 6 Importer

5) DxO PhotoLab 8

6) DxO PhotoLab 8 Importer

7) DxO PureRAW 4

8) DxO PureRAW 4 Importer

9) Flickr

10) Luminar Neo

11) ON1 Photo RAW 2024

12) ON1 Photo RAW 2025

13) Show Focus Points

14) Topaz Photo AI

Config.lua flags:

Adapter #1: Vendor : 10de

Device : 2783

Subsystem : 1421196e

Revision : a1

Video Memory : 11999

Adapter #2: Vendor : 1414

Device : 8c

Subsystem : 0

Revision : 0

Video Memory : 0

AudioDeviceIOBlockSize: 1024

AudioDeviceName: System Default - Realtek HD Audio 2nd output (2- Realtek(R) Audio)

AudioDeviceNumberOfChannels: 2

AudioDeviceSampleRate: 48000

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 4070 SUPER/PCIe/SSE2

GL_SHADING_LANGUAGE_VERSION: 4.60 NVIDIA

GL_STENCIL_BITS: 8

GL_VENDOR: NVIDIA Corporation

GL_VERSION: 4.6.0 NVIDIA 572.83

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 · Apr 15, 2025

Overall this is just getting worse and worse. LrC has now started to freeze up my computer when it is getting bad.

I know the computer itself is working fine - I have tested it on some extremely demanding games and other software and it not only did well but it handled them beautifully on maximum settings without really even taxing the GPU.

Lr is another story, however. I am now fairly certain this is a problem with the way it is handling the VRAM. It will operate without using all of the VRAM some of the time. It may use 5GB or 7GB or 9 or even 10GB. Then it will for no apparent reason jump up and use 11GB+, and that is when the problems start. That is when not only does LrC become laggy and unusable, but the rest of the computer will, also. For instance, with LrC running in the background I was typing this post and it shot up to 11.2GB and the typing into the forum here became very jerky and slow.

When it is not using all the VRAM, LrC runs blazingly fast - much faster than before. When it using it, it is much worse than it ever was at its worst on my 6GB 1660Ti. It's as if now that it has more VRAM to dig into and use up the problems are worse.

Report · Apr 16, 2025

Hi @defaultuv0193urlphq!

I'm sorry to hear about the issues you're experiencing with Lightroom Classic despite the hardware upgrade.

Here are a few things we can try to improve performance:

1. Go to Preferences > Performance and increase the Camera Raw Cache size to 10.0GB or more.
2. On the same tab, check the option to Use Smart Previews instead of Original for image editing and uncheck the option to Generate Previews in Parallel.
3. On the Performance tab itself, select Off from the drop-down for Use Graphic Processor.
4. Go to the General tab and check the box to Replace Embedded Previews by Standard Previews during idle time.

I also noticed in your System Info that you have some plugins installed. Could you try going to File > Plug-in Manager and test if disabling some of them one by one helps with the performance? One of them might be the culprit.

Thanks!

Alek

Report · Apr 16, 2025

Aleke,

Thank you for your reply.

1) My Camera Raw Cache size is currently 30GB. I have had it at 200GB for the past couple of years but I reduced it to see if that would help. At 30GB performance has been better than it was at 200GB, even though it worked fine before at 200GB.

2) I have in the last few days tried editing with smart previews and the problem occurs while doing this as well. The fundamental problem seems to be that LrC will at times allocate the full amount of VRAM available to it regardless of the amount needed for a given photo and then it encounters the slowdowns typical of any software operating without enough free RAM to page properly.

3) It is possible to gain increased performance by turning off the use of the GPU, but this is not really a solution. LrC is designed to work with the GPU and in fact after turning it off, LrC on boot up tells me to turn the GPU on for increased performance. I have a top 5% graphics card and not using it because Lr is not using it properly is an enormous waste of resources and of money. I must also reiterate that until 5 days ago my system worked much better without doing this. Finally, I did try turning this off just now and as expected there was a significant performance decrease without the GPU enabled. To reiterate, when the VRAM is not all allocated to the breaking point LrC is running beautifully with the card.

4) As I understand it, this would primarily effect importing and the rendering of photos while in the library module. I must reiterate that while in the library module LrC performs very well. While in the library module, VRAM allocation is usually quite low and everything operates very well. It is only while in the develop module that VRAM allocation shoots up to 99.7 - 99.8% and LrC performs as would be expected when there is no free memory.

Report · Apr 18, 2025

I have now spent a fair bit of time editing with smart previews and have found that it does allow me to do a little bit more before the VRAM will fill up, but 11GB is still a point of no return where even using smart previews once it is crossed the system slows down and the VRAM usage will not reduce, either.

Interestingly, when editing with smart previews and the VRAM usage has gone above 11GB and the system has slowed down I have found that I can get the VRAM usage to drop a little bit - down to maybe 9GB or 10GB - when I switch to a new photo to edit, but as soon as I start editing even doing very basic things like increasing exposure it goes back up and slows back down. When editing at full 1:1 resolution, it just stays above 11GB and usually doesn't drop down at all. The outcome is the same, because when editing it goes back up, but it may point to whatever exactly is causing the problem that the behavior differs in this way.

Report · Apr 18, 2025

Hi @defaultuv0193urlphq!

Thanks for the update! Could you try some of the suggestions listed here to improve Lightroom Classic performance? Hopefully, it can help boost performance even further for you.

Thanks a bunch! Let me know if you need any more help!

Alek

Report · Apr 19, 2025

Just about everything on this list is something I have been already been doing for years and am still doing. They have no effect, possibly because many or most of them concern trying to maximize or eliminate bottlenecks with processing power. To reiterate, the problem here is that LrC is using up all of the VRAM so that the system is not capable of paging properly. This is why when running LrC the overall system will slow down, the mouse will not move smoothly, etc.

Here is a quick 30 second video demonstrating how badly the crop tool operates whenever the VRAM exceeds 11GB of allocation. https://www.youtube.com/shorts/RQfHvt8DWFw

Report · Apr 19, 2025

And here is a second video demonstrating how smoothly it performs when the VRAM usage is more reasonable. The other video of poor performance was with VRAM at 11.7 out of 12GB used. This is with 8.8GB out of 12GB used.

To reiterate, when using a lower memory 6GB card, this kind of poor performance did not happen even when VRAM usage went to 5.8GB out of 6.
https://www.youtube.com/watch?v=ZD6npRZzjWk