I have recently bought a new pc and freshly installed latest version of Photoshop. After setting everything up and giving it a go I noticed flickering and weird glitches on UI.
I think it is easier for me to show it, so I recorded my screen and captured all the most common glitches. It mostly happens when resizing tool bars and during painting( last 10 sec of video.) Link to the video: https://youtu.be/RyqA88uFtb8
I have lastest version of windows, latest CPU, GPU and display drivers. I have tried turning on and off GPU processing (as shown in video). The photoshop isn't unusable by any means, but the whole flickering, especially when painting, is really distracting.