grey block changes and flicker

Question

grey block changes and flickers, check the attached file.

Once I resize the photoshop window less than 5k, problem gone.

My computer is MacPro 2019 28core with Vege Pro II DUO, and pro display XDR 6k display.

AxelMatt · Answer

Please try to disable the option to "Use Graphics Procesor" from Photoshop by going to Preferences, then Performance. Once done, quit & relaunch Photoshop to check if that helps.

If you're unable to access Preferences and PhotoShop crashes before that, please go to the location C:\Program Files\Adobe\Adobe Photoshop 2021. Then rename the Sniffer.exe to Old.Sniffer.exe and try launching Photohsop again.

If it helps, you can check out the steps suggested here: https://helpx.adobe.com/photoshop/kb/troubleshoot-gpu-graphics-card.html

If the issue persists, you can try to reset the preferences of Photoshop using the steps described here:

Preferences in Photoshop (adobe.com)

Please backup your settings before resetting the preferences. You can check:

Migrate presets, actions, and settings (adobe.com)