AI Denoise background queue freezes/stalls when pasting settings on Lightroom Classic 15.3 macOS Sequoia 15.7.5

One more thing, so I tested it, even if I copy the settings, it is stopping.

Okey, so I actually found the trigger point of the AI denoise process stopping. So I can edit any other images, it still continues. But the moment I copy settings from an image and then paste the settings to another image, it immediately stops and stalls. If I use the “previous” button, it does not stall, but sometimes I dont’ edit images next to each other, also I frequently use the copy-paste settings because the “previous” button also copies the crop and everything that I don’t want. So the moment I hit paste settings, the AI Denoise in the background immediately stops and everything is stuck and I need to restart Lightroom Classic.

Hi @Gabor Lenart,

Thanks for reporting this. To start with, please try the following:

• Reset AI models

• Close Lightroom Classic

• Go to:
  /Library/Application Support/Adobe/CameraRaw/ModelZoo/
~/Library/Application Support/Adobe/CameraRaw/ModelZoo/

• Delete everything inside the ModelZoo folders and launch Lightroom & test.

• Test in a new catalog

• Create a new catalog

• Import ~100-150 images

• Apply AI Denoise and check

A couple of things to help us narrow this down:

• Does it always stall when you start editing while Denoise is running, or only in certain cases?
• Does it get stuck on images that already had Denoise applied earlier (as you mentioned)?

If the issue continues:

• Please share a screen recording of your workflow (apply > edit > where it gets stuck)
• Copy & paste your System Info (Help > System Info)

Thanks for your patience. We’ll take it forward once we have these details.

Best,
Anshul Saini