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jmarsh15
jmarsh15
Participant
June 25, 2026
Question

Lightroom v15.4 Update Broke Masking Performance, denoise and Cloud Sync

  • June 25, 2026
  • 2 replies
  • 43 views

I just did the update TODAY & THIS IS THE WORST THING I’VE EVER USED. Just adding a basic backgound/subject mask is taking 20 minutes per photo and it doesn’t seem to sync. I’m not even going to start in on Denoise. I am so frustrated as I just updated, have a huge workflow and cannot edit at all. WTH is going on????

      2 replies

      C.Cella
      C.Cella
      Legend
      July 5, 2026

      Your GPU preferences might have regressed and you lost all GPU acceleration.

      Check the Preferences > Performance

      I suggest to set them to Custom.

      johnrellis
      johnrellis
      Legend
      July 4, 2026

      [This just showed up in my forum feed.] Please do the LR menu command Help > System Info, click the Copy button in the upper right corner, and paste into your reply here, so we can see exactly which versions of hardware and software LR thinks you're running and important LR options that are set.

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