Lightroom CC: Scroll speed on iMac Pro incredible slow

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  • Problem
  • Updated 1 month ago
  • Acknowledged
  • (Edited)
On my 10 Core iMac Pro with Vega64 and 64 GB RAM the scroll speed of latest Lightroom CC in the library is so ridiculously slow that it just can't be true.
Disable or enable hardware acceleration doesn't change anything.
It's literally unusable like this and I only got 400 images in my library.
When flicking the scroll area of my mouse it takes 1-2 seconds until it moves.
Anyone else experiencing this? How can this be true?
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Striatum

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Posted 10 months ago

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Rikk Flohr, Official Rep

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Greetings Striatum,

What size/resolution monitor do you have?
Is the Syncing Icon showing everything synced and local?
Do you store your images locally or have everything set to be in cloud with only as-needed downloads?
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Fjölnir Ásgeirsson

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He said he's running an iMac Pro.. it has a 27 inch 5k display.

I have the same issue. Scrolling is unusably slow. Originals synced on internal SSD

Lightroom CC version: 2.0 [ 20180919-1627-7b5e24e ] (Sep 20 2018)Operating system: Mac OS 10
OS Version: 10.14 [1]
Application architecture: x64
Logical processor count: 16
Processor speed: 3.2 GHz
Built-in memory: 65,536.0 MB
Real memory available to Lightroom CC: 65,536.0 MB
Real memory used by Lightroom CC: 1,545.5 MB (2.3%)
Virtual memory used by Lightroom CC: 2,499.3 MB
Memory cache size: 948.9 MB
Internal Camera Raw revision: 61
Maximum thread count used by Camera Raw: 9
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 22MB / 32767MB (0%)
Camera Raw real memory: 22MB / 65536MB (0%)
Displays: 1) 5120x2880

Graphics Processor Info: 
Metal: AMD Radeon Pro Vega 64


AudioDeviceIOBlockSize: 512
AudioDeviceName: iMac Pro Speakers
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 44100
Build: Uninitialized
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 Pro Vega 64 OpenGL Engine
GL_SHADING_LANGUAGE_VERSION: 1.20
GL_STENCIL_BITS: 8
GL_VENDOR: ATI Technologies Inc.
GL_VERSION: 2.1 ATI-2.2.6
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 

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Striatum

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as told, 5K resolution, everything synced to local SSD
10.14.1 and Lightroom CC 2.0.2 doesn't change a thing
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ALESSIO COLUCCIO

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I have the same problem (Lr CC ver.2) but only after the installation of OSX Mojave, I think that MOJAVE has got an issue with the actual version of LR CC. Is very slow and I can’t use it, it’s impossible! (Macpro 6 core + ssd + 32gb ram)
(Edited)
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JJohnsen

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Same here - very disappointed. My old 2010 MacPro is faster - yeaahh. Where is the quality control for this software? Hope a fix soon.
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Rikk Flohr, Official Rep

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We have been able to replicate the issue and will be logging an issue for this. Thanks for your reports. 
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William Edwards

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This seems to be the case across all 5K iMacs, not just iMac Pro. Any updates? Thanks
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Darren

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I, too, am eagerly awaiting this bug to be addressed. Currently, Lightroom CC on iMac Pro is unusable due to the delayed scrolling and severe interface lag. I'm having to do everything in Lightroom CC on iPad Pro as a result.
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Julian Manuszewski

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please fix this!  January 2019 - we've now had issues since the iMac pro's launch over a year ago.
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Paulo Abreu

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In fact, I have a MacBook Pro (15-inch, 2016) and I have the same issue. I really don't understand how can Adobe sell a product to the MacOS with such an evident issue.
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Adam Rogers

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Any update? 
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Paulo Abreu

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As a workaround, decreasing the window width makes it bearable.
(Edited)
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Armen

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Another workaround which might be acceptable to some, is reducing resolution of the app itself. 

Right click on Lightroom app > Get Info > Launch in low-res mode.

On retina displays you can increase the simulated resolution via Display properties, so that it compensates for some of the resulting UI pixelization.
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Björn Schön

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Same here, not with a iMac Pro, but with a Retina 5k iMac.
The 5k resolution seems to be the main problem here.

Adobe - Apple Photos App is running smooth with  10-thousands of photos, so solve this issue!
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Adam Rogers

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I have the same issue. Have for a while. Running an iMac Pro with 128GB RAM running a 4TB SSD + RAID10 on thunderbolt 3 array. I have 336,000 photos in my Lightroom CC library and it is so agonizingly slow to browse from photo to photo.

I don't want to wait any longer - what is the best alternative? I like the cloud based approach. Should I just choose ON1 or CaptureOne and just use a cloud service to sync, access via mobile? Possibly triage through a third party app and then just import select photos into Apple Photos and use iCloud?

What is the best alternative that can handle this size catalog (336,000 photos)?
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Marius-Eugen Gerdan

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This reply was created from a merged topic originally titled Lightroom CC: Slow scrolling (macOS).

The all new Lightroom CC fulfills my wildest dreams about what i wanted lightroom to be.
But: I own a Top Line Macbook 2016 15" System with Radeon Graphics and 2,9 GHz Quad Core CPU, but scrolling is not smooth. When putting Lightroom CC on a secondary 5K sceen it is not even close to smooth, when scrolling with the magic mouse top and down a few times, the result is that i can sit back and watch the next 15 seconds for the programm to execute the scrolling operations, and this in an album containing just 200 photos. In Apple Photos scrolling in the same constellation is like butter. This is really a huge dissapointment and blocks me from using this software, since... what I want to do with it is as well: browsing my photos...
But the direction the product is going is really promising.
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Nuno

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This reply was created from a merged topic originally titled Lightroom CC: Slow performance and scrolling - iMac 2017.

Hello there.

I have a 2017 i7 4.2Ghz iMac with 24GB ram and the 580 Pro 8GB graphics card, and the performance of the new Lightroom CC is at certain points very very bad. 

Scrolling through the photos is an pain, its very slow and choppy, and if I scroll a bit faster, the program gets hang on the scrolling direction I was scrolling for some seconds. If I reduce the window size, the scroll gets smother (not perfect). Which makes me think that the program is not optimized, at all, to retina displays. Any album with more than 30 photos and I'm spending more time scrolling than editing. And going to the "all photos" tab is not an option.

Anyone experiencing this? Any temporary fix? I notice that if I change the grid view, it gets a bit better, but not by much.

Plus, some edits, like the brush edits, are also very slow to take effect. When I'm painting with the brush it lags a lot behind my current cursor position. 
It's a bit disappointing because, despite not being 100% smooth, I have a better performance on lots of Lightroom functions on my almost 7 years old MacBook Pro without a Retina display.
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Raphael

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The best workaround I found is this one:
  1. Open Finder
  2. Navigate to Adobe Photoshop CC 2019 in your Applications folder
  3. Rightclick the application, click on "Get Info"
  4. Activate "Open in Low Resolution"
Now you can at least use Adobe Software that still cannot handle applications in high resolution.

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Paul Elliott

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Wow, it works, that's kinda bitter sweet. Sigh... thanks.
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Adam Rogers

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not for me..it's marginally better but still dog slow
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ALESSIO COLUCCIO

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This reply was created from a merged topic originally titled Lightroom CC: Slow scrolling gallery on macOS 10.14 Mojave.

I have a big issue with new Osx MOJAVE and Lightroom CC ver. 2.0 on a Macpro with ssd/32gb/6 core + Dell 4k 32 inch. and double graphic card AMD FirePro D300 2gb ram. The scrolling gallery is very very slow at all screen resolution, isn’t possible to work fine. Does anyone have the same problem? No problem before upgrade to Mojave with the same system/Lightroom version. I tryed to uninstall/reinstall Lr with two reboot but the problem isn't solved. I'm very disappointed, it's crazy that with my old Macbook the speed is ok and with an expensive/professional system it's impossible to work.
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Paul Elliott

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Similar issues here I am afraid... I now have 20GB RAM installed. 1TB fusion SSD + NVMe, 4GB GFX. Scrolling is laggy. Only LR behaves like this. No other app on the machine.
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Paul Elliott

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Thanks, yes it works. Pity about the ugliness but OK fine. ;)
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Raphael

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Ugliness vs. slowness – there is always a compromise in life ;)
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Paul Elliott

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Ha ha ha! Eish... unless I move from LR, because its the only app that gives me horns, but! I LOVE LR... soooooo, ugly it is.
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Carlos Diaz

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This reply was created from a merged topic originally titled Please Implement precision scroll in MacOS.

MacOS supports high precision scrolling, please add compatibility to Lightroom. 

Right now scrolling is choppy - the content jumps about 5 or 6 pixels at a time. It's distracting and makes the product more difficult to work with.

Users have been asking for this for years, Could we at least get an explanation from Adobe as to why they are choosing not to implement this very basic feature???
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William Edwards

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Well, at least admins have merged the several threads on this topic... that's about the most action we've seen on this problem in the years since it's been raised :/ 
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Rikk Flohr, Official Rep

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Lightroom Desktop 2.3 was released today and contained a fix for this issue. Please update to 2.3 and verify that you are no longer seeing the issue. Thank you!

Let us know how the Grid Scroll is working now please. 
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Striatum

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It's much better now, but still not as smooth as I would wish it with a high end machine.
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Rikk Flohr, Official Rep

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Thanks for the feedback. It is a work in progress and more improvements are to come!
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William Edwards

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It's still choppy, but much more useable than it was. Thank you for your hard work on this! Additional improvements would of course still be welcome. 
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markusw

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I don't see an update - my latest version is still Lightroom CC 2.2.1
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markusw

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The update just showed up. Yes, grid scrolling is improved. The movement is closer to being fluid now. From what I can tell the jumps between screen updates got reduced. It updates more frequently now, which is closer to the appearance of a smooth scrolling movement. But we can still see the jumps which leads to a slight jitter-effect. I am very grateful for the improvement but also for the promise that one day this problem will be fully fixed.
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Servan Fichet

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It is a really noticeable and appreciated improvement! Thank you for the hard work! It is really nice to see that people in Adobe are actually listening to the users.
It would have been perfect if we have received a feedback months ago (at least to inform that you are working on it)...
Do you also plan to implement such improvement in the Classic version? The scrolling could be better also...
But thank you again for the work done!
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Servan Fichet

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(Edited)
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eliseo miciu

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I experienced the same. spent $7000 on an iMac pro, and LR run better on my old 2011. I can't believe Adobe don't care , may be it is a fight wit Apple... I don't know... I started using Capture One and I think the made me a favor, it is way better soft! the best quality I've ever seen from the raw files!!
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chadcf

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Also better here! I had done the trick of disabling opening it in high resolution mode which was working pretty well, but with the latest update I turned on high resolution mode again and tried, and things are pretty good. I wouldn't say it's lightning fast and the most responsive scrolling I've ever experienced (I have around 14,000 photos), but it's gone from being almost unusable to being perfectly usable.