P: 32bit document shows banding on Mac Mini when GPU enabled

I've just upgraded my 2018 Mac Mini to macOS monterey.

Now whenever i open a 32bit exr image it shows extreme banding. It happens on Photoshop 2021 and 2022.

If i disable the advanced graphics all banding goes away, however it is extremely buggy with the advanced graphics turned off. Layer masks often show incorrectly when at different zoom levels with big squires either showing as white or black. The transform handles don't show up unless i zoom out and in again, the heal tool workings just downt show at, doesn't go dark grey, if i zoom out and in again it suddenly fixes it.

Where is the bug? In Monterey GPU drivers or within photoshop?