Help! Photoshop display brightness constantly changing problem
I have a rather strange problem with Photoshop. Whenever I open it, the display brightness begins to step up in brightness every half-second or so and then step down in brightness and then up again and so on. It only happens when I start Photoshop, (Lightroom and all other programs are fine). I have clean reinstalled photoshop and graphic drivers without success. I do use a Spyder Elite, but have tried disabling that with no luck. The PC is a desktop and does not have adaptive brightness. The system is Windows 10 Pro, Photoshop 23.4.1 The graphics card is an NVIDIA GeForce GTX1060 6GB Can anyone offer any help please? Adobe support has tried but has had to go away and think about it!
Thanks