Graphical issue with brightness/saturation on wow classic

Having an issue where my game, specially the UI is really bright. When I press the windows key and the windows menu comes up, or I’m on my other monitor where wow is no the focus, the game looks great.

Yesterday I updated my gfx driver’s as they were a few days out of date; this fixed the problem but now it’s happening again.

I do have HDR on in the windows settings; but turning it off doesn’t fix the issue.

I’ve tried messing around with settings but nothing seems to work, I have the windows auto colour thing off also.

Before anyone says, it doesn’t show up in screenshots/when I press the screenshot button with wow not in focus the issue happens.