Lightroom Classic: GPU Acceleration not working until "Settings -> OK"

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  • Updated 3 months ago
  • (Edited)
Tried to found out what for GPU acceleration is. Seems to be it's not working after each new launch of LR. I must go to Settings and click OK each time to acceleration start working as it should.

Check my video: https://www.youtube.com/watch?v=qxQmHjdatP4 (60fps record)

I hold down right and left arrows. Photos scrolling is sluggish at first but when i go to settings and just hit OK (gpu acceleration turned on before previous exit) it is much much better without UI lag. Is it a bug? my LR Classic is version 9.2.
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Dmitrii Vasilev

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Posted 3 months ago

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Johan Elzenga, Champion

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Make sure your graphics card driver is up to date.
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Dmitrii Vasilev

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Nvidia 447.74 from March 19.
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Dmitrii Vasilev

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More info:
-Changing gpu drivers to older 442.19 Studio Drivers does not help.
-I no need to hit OK button. I can press even X or Cancel button and scrolling become fast.
-'Use Graphic Processor': AUTO not working in call cases. Scrolling is lagging. Only 'Custom' is working good.
When i choose Custom then things works as mentioned in first post.
Check box "Use GPU for image processing" when Custom is choosed do nothing whith scrolling.
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Rikk Flohr, Official Rep

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Information about GPU Acceleration is found here: https://helpx.adobe.com/lightroom-classic/kb/lightroom-gpu-faq.html look at the section "How do I determine if Lightroom Classic is accessing the graphics card?"

You don't mention if you are seeing the slowness walking images in Loupe (Library) or Develop.  GPU is not used in the Library module at all. It is not used everywhere in Develop either. 
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Dmitrii Vasilev

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Develop module, you can see it in my video demonstration. 
Several times walking left and right with slowness. Then i go to Settngs and close it (OK or Cancel button, no matter) and after that walking is insane fast. After that LR shows grey box instead of rendering each photo when i'm scrolling. That's why scrolling is fast. Only small preview in a upper left corner is rendering. All in my video.

(Edited)
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Simon Chen, Principal Computer Scientist

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Make sure you are running the latest version of the Nvidia driver. Also make sure it is running in high performance mode https://nvidia.custhelp.com/app/answers/detail/a_id/3130/~/setting-power-management-mode-from-adapti...


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Dmitrii Vasilev

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Updated driver. Not helped.
Perfomance mode also not helped. Please see my video - issue fixes when i open and close Settings window in LR - after that photos rendering insane fast.
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Rikk Flohr, Official Rep

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Dmitrii,

In general, GPU doesn't affect walk responsiveness between images via an arrow key in Develop module. 

I also see you are running Lightroom 9.2. Please install Lightroom 9.2.1 released earlier this week and let us know if the issue still manifests. You may need to reset your preference file as well. 
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Dmitrii Vasilev

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Updated to 9.2.1 and reset settings via alt+shift at launch - not helped.
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Dmitrii Vasilev

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"In general, GPU doesn't affect walk responsiveness between images via an arrow key in Develop module. " -

Not in my case. GPU acceleration is matter. New video: https://youtu.be/IMlzgXAOz6U
In "Auto" walking is slow. In "Custom" it's good. If i leave it in "Custom" and restart LR - it is slow but  will be fast when i open and close Settings window without any changes.
(Edited)
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Dmitrii Vasilev

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any news? how to send this bug to Adobe?
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Rikk Flohr, Official Rep

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This is how you submit a bug to Adobe by reporting in this forum. . 

Complete details on how to do this are found at this link

What we are missing in order to file this as a bug is repeatable steps.  Without repeatable steps our engineering team cannot begin to look for a fix. We can see from the videos what is happening to your machine but it doesn't explain why. And, so far, I cannot repeat it on my end on multiple nVidia-equipped systems. 

At the very minimum we will need additional customers to confirm this behavior on their systems as well.

I strongly suspect you have a system/installation specific issue that is causing the behavior you are reporting. 

In the absence of other customer reports and considering what has happened so far on this thread my recommendations:

Test on a new test catalog>???
Video Driver Update>Done
Setting suggested by Simon above> Done
Preference File Reset>Done

Clean Video Driver Reinstall following nVidia's instructions  >
Clean Lightroom Reinstall >

Lightroom Clean Install Procedure 

  • Close Lightroom
  • Restart the computer
  • Use the Adobe Creative Cloud App to uninstall Lightroom Classic
  • Restart the computer
  • Install Lightroom Classic via the Creative Cloud App without launching any other programs.
  • Restart the computer
  • Launch Lightroom
  • Wait 5 minutes
If performance issues persist after this procedure and reset of your preference file, then it is likely an issue that needs troubleshooting further.


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Dmitrii Vasilev

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Installed LR from a scratch on a  laptop with Nvidia GTX 950M that never been used for LR.
New catalog. Absolutely same problem as with main machine..
Btw i can not agree that GPU acceleration does not used when you scrolling photos.
Screenshots from a laptop. First one is when  LR just launched and scrolling is slow. Second one is when i open and close settings with Cancel button.
Look at "GPU usage" graph. In first case GPU does not used. In second case my low-end GPU is used about 30-50% and scrolling is much faster, almost as on a powerful main machine.

(Edited)