strange squares pop up while using the paint mixer brush

[srg]

These squares change and flash. AP V2.2Beta

 

[Hangman]

Hi @srg,

Try disabling Hardware Acceleration in the Performance Preferences (if it's enabled)... This will require a reboot of Photo but will hopefully fix the issue.

[Chris B]

Can you reproduce it on a single pixel layer? If not, it may be worth attaching the file or make a copy, start deleting layers which will eventually show the culprit. I wonder if it's a combination of objects in the Layers Panel?

[srg]

8 minutes ago, Chris B said:

Can you reproduce it on a single pixel layer? If not, it may be worth attaching the file or make a copy, start deleting layers which will eventually show the culprit. I wonder if it's a combination of objects in the Layers Panel?

This appears similar to what i 've reported in another post. saving and re-opening the file solved the problem.

 

[Chris B]

Try changing your RAM Usage Limit in Settings > Performance to something a bit less than what is available. It looks like you've got 32GB available so see if setting it to 24GB makes a difference.