When I turn on HDR in windows 11 settings, my photoshop is start flickering and it's completely unusable because of low performance or malfunction. But when I turn off the HDR, photoshop is back to normal.
Without exact system info we can't realyl tell you much. From problems with the graphics driver and inadequate hardware acceleration to connection issues with teh screen to a faulty monitor profile there could be a million reasons. You'd have to be much more specific and provide the necessary details.