Visual Bug on Laptop - ARM64 Microsoft Surface X

Hey, I have this visual bug on Firefox where spaces on my screen get blurred, flicker or are just another color than they're supposed to be. This happens on every website and even on the menu bar or when I hover over bookmarks. It's hard to describe, so I attached some screenshots. I've already tried: Restarting the laptop, restarting Firefox, opened Firefox as admin, cleaned Firefox and went to "about:support" and gone into the troubleshooting mode. When I'm in troubleshooting mode, the bug disappears but as soon as I restart Firefox, it's there again. Sometimes the bug changes when I scroll or move my cursor, as you can see on the two screenshots from Twitter (X). Sometimes it's barely noticable, like on the PDF website and sometimes I can't even read text fields as in the chess.com screenshot...