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TSpencer
Participating Frequently
October 4, 2023
Question

GPU Not Being Utilized

  • October 4, 2023
  • 1 reply
  • 729 views
Lightroom Version Lightroom Classic version: 12.5 [ 202308091523-68a7abd6 ] Operating System: Windows 10
I have a GEForce GTX 1650 installed and Lightroom recognizes it (see attached). Updated to the latest driver. When I export photos, the GPU is not used. In task manager, the GPU is running at 1-2% while exporting but the CPU is running at 80-100%.

Further info - I just went through a hard drive crash and installed a new hard drive (SSD - old one was HDD), reinstalled Windows and Lightroom. Before the crash, the GPU was utilized but not now.
 
Tried so far but no go:
Deleting config.txt file
Clean reinstall of latest driver and reboot

Any ideas how to solve? Thanks,
    This topic has been closed for replies.

    1 reply

    GoldingD
    GoldingD
    Legend
    October 4, 2023

    A couple of observations, first one is a test that may or may not help to determine the issue at hand.

     

    Change the Use Graphics Processor to Auto instead of Custom, restart LrC and look at the preference setting again, any change in what is displayed ? Does LrC enable the use on export?

     

    note on above,  see "How do I determine if Lightroom Classic is accessing the graphics card?' in:

     

    https://helpx.adobe.com/lightroom-classic/kb/lightroom-gpu-faq.html

     

    and perhaps look at that document for additional info

     

    Second observation probably has nothing to do with your issue but lots to do with performance during develop mods. Your Camera RAW CACHE Setting at the default 5GB. Very bad, very small, up that, at least 50GB, or more. some would say 70GB or more. Unless you do not work with RAW.

     

    https://petapixel.com/optimize-lightroom-classic/#Your_Camera_RAW_Cache

     

     

    T
    TSpencerAuthor
    Participating Frequently
    October 4, 2023

    Golding - thanks.  I upped the cache to 50GB - thanks for the tip.  GPU still not used when I did that.  When I switch from custom to auto - it switches from "full acceleration" to limited.  That must have something to do with it but I'm not sure what.

    GoldingD
    GoldingD
    Legend
    October 4, 2023

    Their is a method, a file or two to remove, that forces LrC to reconsider the GPU upon LrC startup. This in case LrC got it wrong at some point, or perhaps a change improved things but LrC failed to notice. Thing is, I do not have a link. Might be in that link I posted in earlier reply??

     

    Hopefully actual Adobe will enter in the discussion, or perhaps another member has the link.

     

    No guarantee it will solve anything.

     

     

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