8 Replies Latest reply on Jul 6, 2016 12:29 AM by mha42

    Lightroom slows down (suspectedly) after computer suspend to RAM (sleep)


      LR is usually getting significantly slower. Suspected after computer suspend to RAM (sleep). Perhaps after multiple sleeps. It will go to bed after 1 hour of inactivity to save on my electricity bill.


      Symptoms: Even using the adjustment brush shows a significant lag / reduced framerate. Working with photos is horribly slow compared to a "fresh start". Yet everything is still functioning correctly.

      Remedy: #1; Restart lightroom. #2; Computer reboot. Seems to be two different states.


      System specs: ASUS H97M-PLUS w/ i7-4970k @ 4x4GHz. 16GB RAM. Samsung m.2 SSD 512GB. GeForce GTX 750 driver version 368.39 (passing OpenGL acceleration test in LR).

      Operating system: Windows 7 64-bit (patched with all recent updates via Windows Updates including service packs)

      Lightroom: Perpetual version 6.6. Freshly installed system incl LR within half year ago; still same symptoms before and after. Installed all reasonable driver updates including motherboard firmware update.


      Where do you suggest taking it from here?



      System info output:

      Lightroom version: 6.6 [ 1078672 ]
      License: Perpetual Operating system: Windows 7 Version: 6.1
      Application architecture: x64
      System architecture: x64
      Logical processor count: 8
      Processor speed: 3,9 GHz
      Built-in memory: 16326,6 MB
      Real memory available to Lightroom: 16326,6 MB
      Real memory used by Lightroom: 1141,1 MB (6,9%)
      Virtual memory used by Lightroom: 2110,9 MB
      Memory cache size: 6,1 MB
      Maximum thread count used by Camera Raw: 8
      Camera Raw SIMD optimization: SSE2,AVX,AVX2
      System DPI setting: 96 DPI
      Desktop composition enabled: No Displays: 1) 1920x1200 Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No


      Graphics Processor Info: GeForce GTX 750/PCIe/SSE2
      Check OpenGL support: Passed
      Vendor: NVIDIA Corporation Version: 3.3.0 NVIDIA 368.39
      Renderer: GeForce GTX 750/PCIe/SSE2
      LanguageVersion: 3.30 NVIDIA via Cg compiler
      Application folder: C:\Program Files\Adobe\Adobe Lightroom
      Library Path: C:\Users\mikael\Pictures\Lightroom\linux_20140613\lr\lr-2.lrcat
      Settings Folder: C:\Users\mikael\AppData\Roaming\Adobe\Lightroom
      Installed Plugins: 1) Export to Photomatix Pro 2) HDR Efex Pro 2 3) Magic Export 4) Nikon Tether Plugin Config.lua flags: None Adapter #1: Vendor : 10de Device : 1381 Subsystem : 85171043 Revision : a2 Video Memory : 1993 AudioDeviceIOBlockSize: 1024 AudioDeviceName: PA246-C (NVIDIA High Definition Audio) AudioDeviceNumberOfChannels: 2 AudioDeviceSampleRate: 44100
      Build: LR5x102 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: 2048 GL_MAX_TEXTURE_SIZE: 16384 GL_MAX_TEXTURE_UNITS: 4 GL_MAX_VIEWPORT_DIMS: 16384,16384 GL_RED_BITS: 8 GL_RENDERER: GeForce GTX 750/PCIe/SSE2 GL_SHADING_LANGUAGE_VERSION: 4.50 NVIDIA GL_STENCIL_BITS: 8 GL_VENDOR: NVIDIA Corporation GL_VERSION: 4.5.0 NVIDIA 368.39 GPUDeviceEnabled: false OGLEnabled: true GL_EXTENSIONS: GL_AMD_multi_draw_indirect GL_AMD_seamless_cubemap_per_texture 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_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_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 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        • 1. Re: Lightroom slows down (suspectedly) after computer suspend to RAM (sleep)
          Just Shoot Me Adobe Community Professional

          Is LR open when it goes into Deep Sleep?


          If you are going to be away from your computer for extended periods of time why not shut it down. That way you will save even more electricity.

          • 2. Re: Lightroom slows down (suspectedly) after computer suspend to RAM (sleep)
            mha42 Level 1



            Yes; LR is always active on the computer. The sole purpose for the computer is to run LightRoom. Literally. The only time I close it is when patching graphics drivers as this has proven to crash LightRoom at times and when rebooting it to finalize windows patches.


            I don't want to shut it down because of convenience. Sleep state saves me sufficient (95% power savings) and with a click of a button I can resume my work just like that. While your answer is not an incorrect solution, it does not address the issue nor a solution for the underlying problem.


            Preferably I'd like to submit a bug report to Adobe, but they seem to direct me to the forum as a first resource and not offer any chat/phone support on the product.


            Thanks for the input though.



            • 3. Re: Lightroom slows down (suspectedly) after computer suspend to RAM (sleep)
              dj_paige Level 9

              On the front page of this forum is the link to how to file a bug report


              Community Photoshop Lightroom Adobe Community - Mozilla Firefox_2016-07-05_09-52-18.gif

              • 4. Re: Lightroom slows down (suspectedly) after computer suspend to RAM (sleep)
                trshaner Adobe Community Professional & MVP

                There is a memory leak issue with LR 6.6 and CC2015.6 and a problem report has already been created:


                Re: Lightroom 2015.6 Painfully slow since update


                You can rollback to LR 6.5.1 as outlined at the same link:


                Re: Lightroom 2015.6 Painfully slow since update


                Concerning use of Sleep mode it is advisable to shutdown your system at least once a week. There is a phenomenon called "soft failure" that occurs with all DRAM based memory systems. The memory soft failure rate is about 10 to 100 times higher than the hard failure rate (i.e. failed memory stick). This can cause blue screens, system lockup, or simply "unexplained" issues.




                Cold booting the system "refreshes" the memory data (OS and applications), which improves system reliability and insures maximum memory availability.

                • 5. Re: Lightroom slows down (suspectedly) after computer suspend to RAM (sleep)
                  mha42 Level 1

                  Awesome. Thanks! I'll fill one out there aswell. As a first time user ever attempting to contact support it was not 100% clear to me. Thank you for the visual verification.

                  • 6. Re: Lightroom slows down (suspectedly) after computer suspend to RAM (sleep)
                    mha42 Level 1



                    I've had the issue since before the latest upgrade though. It's been observed for the past 1.5 years. Just now got my stick out deciding to do something about it.


                    Thanks for the lookup of a soft failure. I am aware that these things can happen. Though this has little to do with suspend / sleep states itself. I do not believe that this is the related root cause for the following reasons;


                    (1) The issue can be observed after the first sleep cycle, unrelated to computer uptime

                    (2) The issue seems to be strongly linked to number of sleep cycles rather than uptime

                    (3) For a subtle memory corruption I would see a lot of other odd behaviors including as you mention bluescreens etc and other application impacts outside Lightroom

                    (4) Memory background corruption would have more dynamic effects if it affected LightRoom's application memory space. It'd crash, behave oddly and unreliable. I am getting an error which is reproducible after amount of repeating the same action.

                    (5) It's a very wide recommendation saying any computer should be rebooted once a week for optimal performance. A similar hardware is running as a server with loads of virtual guests with an uptime over a year. I'd say it's very susceptible.


                    I might though downgrade to the previous release either case as there are known memory leak issues. So thank you for that.



                    • 7. Re: Lightroom slows down (suspectedly) after computer suspend to RAM (sleep)
                      trshaner Adobe Community Professional & MVP

                      I'm running Windows 7 and go into standby mode at least 5-6 times a day with no issues. The motherboard in your system supports Intel Rapid Start Technology, which uses memory and may be causing what you're seeing. Are you using this mode? See page 2-24 here: http://dlcdnet.asus.com/pub/ASUS/mb/LGA1150/H97M-PLUS/E9011_H97M-PLUS.pdf


                      mha42 wrote:


                      (5) It's a very wide recommendation saying any computer should be rebooted once a week for optimal performance. A similar hardware is running as a server with loads of virtual guests with an uptime over a year. I'd say it's very susceptible.

                      Server systems that require high up time use ECC memory, which has the ability to correct soft memory errors. Most desktop and workstation systems do not use ECC memory–ERGO my suggestion of weekly reboot.


                      BTW–I designed memory systems for over 20-years starting back in 1970 when the very first DRAM chips were invented. Been there, done that, helped to uncover issues like Alpha particle radiation, and most recently worked for an Intel Embedded Architecture motherboard manufacturer. I'm now retired, but refresh my memory cells daily.

                      • 8. Re: Lightroom slows down (suspectedly) after computer suspend to RAM (sleep)
                        mha42 Level 1

                        This is a very good recommendation. I did find the option under Advanced\PCH Configuration\Intel Rapid Start Technology. Though it has already been set to Disabled. I have not either made any prerequisite preparations such as a partition on the SSD with the associated ID D3BFE2DE-3DAF-11DF-BA40-E3A556D89593. But I know to stay clear of Rapid Start then. Then again I try to keep this computer as tidy and purposed as possible. No fancy optimizations.


                        While I agree with you that it could happen and that soft memory corruption on non-ECC RAM occurs I am disagreeing that this is the root cause for a deterministic behavior in one application which I can reproduce every day or so.


                        My theory is either a bug in Lightroom or graphics card drivers where for instance GPU acceleration is not working as intended or in an impaired capacity after resume in certain circumstances. It's not extremely lagged, but yet noticeable enough to warrant a reboot if I am to work in the develop module. I'd say it feels like the CPU power of the machine was split in half. Instead of getting that direct feedback when adding an adjustment brush it would lag enough to just get a hint of that the system would be overworked. As a restart of LightRoom usually solves the issue I'd say the mismatch lies in LR. In the scenarios where I need to reboot my computer (maybe 10% of the cases) the cause could be anywhere including a Windows or vendor specific implementation cause.


                        The server I am running is on non-ECC RAM too. Non optimal for sure, but extremely few incidents causing crashes and misbehavior. Merely pointing out that critical memory corruption in the wild might not happen as often as thought. There are always the extreme examples where you can attempt triggering it using for instance rowhammer to maliciously modify RAM contents based on hardware design (which I hear ECC RAM is more resilient against?). But sure, rebooting once a week makes sure you don't run in to it. Never a bad recommendation.