P: Slow UI when using Mac and Custom Display Profile

Andrew: 5120 x 2880 (Default)

Bill:  I don't have access to a Windows machine with adequate horsepower for Lightroom.  However, I can live with this for the time being.

@heinphoto What resolution are you driving the iMac? 

Do you have a Windows machine available? It is possible that you could copy your catalog and photos to that machine to use until a fix comes for the Mac. You can use your license on 2 machines. Other than the time involved, it isn't very difficult to more between the two OS. 

If you do this, make sure that you do not check Auto Mask for the Adjustment Brush. I think that is the only serious problem we currently have on Windows other than the plug-in issue that everyone is dealing with. 

Brand new 2020 27" iMac: 3.8 GHz 8-Core i7 with 32 GB RAM and AMD Radeon Pro 5500 XT 8 GB graphics.  Using a custom display profile generated with the latest i1Profiler I am seeing very slow/laggy performance when scrolling the library grid view.  As suggested above, I switched to the sRGB profile and it is much improved. 

Unfortunately, I can't downgrade at this point - I have made too many modifications to the library, etc. in getting it transferred from my old computer.  So, I guess I will use sRGB when organizing/selecting, and then my custom profile when editing until there is a fix.  I'm glad I found this post!

FWIW, I'd like to voice my opinion that for quite a few versions now, the UI performance of LR in Grid-view on the Mac has been sub-standard, and it is my guess that the current issues are just an extreme manifestation of a sub-optimal implementation.

In my life as a system integrator in the video post-production and broadcast space, I regularly deal with media asset management solutions of many different vintages, and just about all of them perform the task of displaying a grid of video proxies (sic!) and a bit of metadata much faster than LR does the same with stills, even clunky old Java applications running on old hardware. It is my belief that however this functionality is implemented in LR is nowhere near as optimized as it could be.

Just for comparison, take a look at Bridge. Cataloging and browsing the same folder of less than a hundred images I did my above test with, uses CPU-resources much more efficiently and is way more fluid in Bridge CS6. And Bridge 2021 is faster yet, even while it is building previews (at lightning speed, I might add). I'm aware that this is comparing apples with oranges, but it might just be a good idea for the LR team to have a chat with the Bridge team on ways to implement a browser of that sort...

I'm not trying to bash Adobe here - far from it: I love LR and I think it's a fantastic tool that does so many things so well. But I really do wish that browsing performance and consistency of functionality in dual-screen mode was as good as the core of the image editing functionality in the Develop module.

With that said, I'd like to encourage Adobe to keep up the excellent work and look forward to future improvements with this regard...

My second monitor is a BENQ SW271 3840x2160 and I definitely have problems with that, even when mirroring my MBP 15" 2880 pixel display

As I've no problems with a slightly slower PC, 6-core Xenon, 64 GB ram, multiple SSDs; what's different between our machines.

Let's start with: are you using plugins, I do not? 32 bit plugins are causing multiple problems from performance to crashes.

I've the same problem on a PC with Intel i9 8-cores, 32 GB of RAM and full SSD.
What I see and LR is hanging is one virtual core going to up to 100%, only one core, the others do nothing. I tried to disable the GPU but no change.

The PC is only used for LR so there is no CPU charge coming from any other task.

It's very boring to treat photos is these conditions.

I opened lightroom today after deleting a number of files last night and bang zipped along, for about 3 photos and then steady degradation affecting the whole computer. Photoshop won't even open. Stuff popping up making me go what??? It's as if all the commands are spaghetti. Finally computer froze and had to shut off and turn back on. Not Acceptable. Imac running Catalina, 16 GB ram. 

Here the detailed info on my setup:

Lightroom Classic version: 10.0 [ 202010011851-ef6045e0 ]
License: Creative Cloud
Language setting: en-GB
Operating system: Mac OS 10
Version: 10.14.6 [18G6032]
Application architecture: x64
Logical processor count: 24
Processor speed: 2.6 GHz
SqLite Version: 3.30.1
Built-in memory: 24'576.0 MB
Real memory available to Lightroom: 24'576.0 MB
Real memory used by Lightroom: 3'686.3 MB (14.9%)
Virtual memory used by Lightroom: 11'868.6 MB
Memory cache size: 913.1MB
Internal Camera Raw version: 13.0 [ 610 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 367MB / 12287MB (2%)
Camera Raw real memory: 369MB / 24576MB (1%)
Displays: 1) 2560x1600, 2) 2560x1600

Graphics Processor Info: 
Metal: AMD Radeon RX 580

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/ron/Pictures/Lightroom/Catalogs/Master Catalog/Master Catalog-v10.lrcat
Settings Folder: /Users/ron/Library/Application Support/Adobe/Lightroom

Installed Plugins: 
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Facebook
4) Flickr
5) Nikon Tether Plugin

Config.lua flags: None

AudioDeviceIOBlockSize: 512
AudioDeviceName: $$$/dvaaudiodevice/SystemDefaultAndEffectiveDeviceName=System Default (Built-in Output)#{comment}DVAAU-4201250: Open the audio hardware preferences page.
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 44100
Build: LR5x42
CoreImage: true
GL_ACCUM_ALPHA_BITS: 0
GL_ACCUM_BLUE_BITS: 0
GL_ACCUM_GREEN_BITS: 0
GL_ACCUM_RED_BITS: 0
GL_ALPHA_BITS: 8
GL_BLUE_BITS: 8
GL_DEPTH_BITS: 24
GL_GREEN_BITS: 8
GL_MAX_3D_TEXTURE_SIZE: 16384
GL_MAX_TEXTURE_SIZE: 16384
GL_MAX_TEXTURE_UNITS: 8
GL_MAX_VIEWPORT_DIMS: 16384,16384
GL_RED_BITS: 8
GL_RENDERER: AMD Radeon RX 580 OpenGL Engine
GL_SHADING_LANGUAGE_VERSION: 1.20
GL_STENCIL_BITS: 8
GL_VENDOR: ATI Technologies Inc.
GL_VERSION: 2.1 ATI-2.11.22
OGLEnabled: true
GL_EXTENSIONS: GL_ARB_color_buffer_float GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_draw_buffers GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_imaging GL_ARB_instanced_arrays GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_provoking_vertex GL_ARB_seamless_cube_map GL_ARB_shader_objects GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shadow GL_ARB_shadow_ambient GL_ARB_sync GL_ARB_texture_border_clamp GL_ARB_texture_compression GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_float GL_ARB_texture_mirrored_repeat GL_ARB_texture_non_power_of_two GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_transpose_matrix GL_ARB_vertex_array_bgra GL_ARB_vertex_blend GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_window_pos 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_clip_volume_hint GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_depth_bounds_test GL_EXT_draw_buffers2 GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample 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_packed_depth_stencil GL_EXT_packed_float GL_EXT_provoking_vertex GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_specular_color GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture_array GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc GL_EXT_texture_env_add GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_lod_bias GL_EXT_texture_mirror_clamp GL_EXT_texture_rectangle GL_EXT_texture_shared_exponent GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_timer_query GL_EXT_transform_feedback GL_EXT_vertex_array_bgra GL_APPLE_aux_depth_stencil GL_APPLE_client_storage GL_APPLE_element_array GL_APPLE_fence GL_APPLE_float_pixels GL_APPLE_flush_buffer_range GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_packed_pixels GL_APPLE_pixel_buffer GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_specular_vector GL_APPLE_texture_range GL_APPLE_transform_hint GL_APPLE_vertex_array_object GL_APPLE_vertex_array_range GL_APPLE_vertex_point_size GL_APPLE_vertex_program_evaluators GL_APPLE_ycbcr_422 GL_ATI_blend_equation_separate GL_ATI_blend_weighted_minmax GL_ATI_separate_stencil GL_ATI_texture_compression_3dc GL_ATI_texture_env_combine3 GL_ATI_texture_float GL_ATI_texture_mirror_once GL_IBM_rasterpos_clip GL_NV_blend_square GL_NV_conditional_render GL_NV_depth_clamp GL_NV_fog_distance GL_NV_light_max_exponent GL_NV_texgen_reflection GL_NV_texture_barrier GL_SGI_color_matrix GL_SGIS_generate_mipmap GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod 

HTH,

Ron