"Desktop Window Manager" and Discord taking up 20-40% of my GPU during games...

[MadTheDogg]

This problem happened yesterday, randomly as far as I can tell I did nothing to provoke it, apart from upgrading to a 3060ti a few days back. I noticed my FPS dropping and something called "Desktop Window Manager", some windows process, was using up 40% of my GPU, sometimes going up to 80%. I used Battlefront 2 as a sort of benchmark and I went from a constant 144fps the entire time that same morning to about 7 FPS. All I could find online was "troubleshoot in task manager" (which did nothing), update your drivers / windows (which they are) and then do a clean windows install, which I just have. However when I thought I had fixed the issue, discord decided to join in the party and use up 40% of my gpu alongside desktop window manager. I don't know what I'm supposed to do, is it my windows? is it my new GPU? 

[RageTester]

Seems to be windows to blame, somebody claims that rolling back the update fixed it. Yet another reason not to use 10...