Skip to main content
E
ExSierra
Participant
November 7, 2021
Question

Lightroom Classic v11 Mac Slow and CPU extensive

  • November 7, 2021
  • 3 replies
  • 557 views

Lightroom Classic v11 Mac Slow and CPU extensive, anyone have any recommendations on how to improve performance?

    This topic has been closed for replies.

    3 replies

    C
    ChrisB_99x
    Participant
    November 10, 2021

    Me too, something is very very wrong with Lightroom Classic v11.0 on my system (iMac Retina 5K, 27-inch, 2019, 3.6 GHz 8-Core Intel Core i9, 64 GB RAM on macOS Monterey 12.0.1).

    It takes about 40 seconds from launch until I see the first photo rendered in the Library module. Other things are super slow too, but that's where it starts.

      dj_paige
      dj_paige
      Legend
      November 11, 2021

      Try the suggestions I mentioned above.

      Conrad_C
      Community Expert
      Conrad_CCommunity Expert
      Community Expert
      November 7, 2021

      What kind of Mac do you have, with how much memory? And is it a new Mac, or have you had it for a while?

      E
      ExSierraAuthor
      Participant
      November 8, 2021

      iMac 2017 5k retina 27", quad core i7 @ 4.2ghz, 16gb DDR4 ram, with SSD drive.  Mostly happens when in the develope module, but really mosy of the time.  I did not even know my Mac had a cooling fan until after the v11 release, now it is blowing hard when running lightroom classic.

      dj_paige
      dj_paige
      Legend
      November 8, 2021
      quote

      iMac 2017 5k retina 27", quad core i7 @ 4.2ghz, 16gb DDR4 ram, with SSD drive.  Mostly happens when in the develope module, but really mosy of the time.  I did not even know my Mac had a cooling fan until after the v11 release, now it is blowing hard when running lightroom classic.


      By @ExSierra

       

      These are symptoms that the CPU is working very hard (causing fans to run) and can't keep up (lag). Potentially due to the 5K screen. First, please turn on the GPU acceleration (Preferences->Performance->Use Graphics Processor should be set to AUTO).

       

      If that doesn't help, please try an experiment where you set the monitor resolution to 1920x1080 and use Lightroom Classic for a while (let's say 15 minutes). Does the problem get better/go away?

      dj_paige
      dj_paige
      Legend
      November 7, 2021

      Performance doing what?

      Terms & ConditionsAccessibility statement
      Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices