You should definitely give it a shot! Due to proton, you should be able to play most, if not all, of the games you play om windows (unless they have obnoxious anticheats). A good resource for checking game compatibility on linux is ProtonDB. In terms of performance, there will almost certainly be a slight impact, but in my experience (with an admitingly far more powerful gpu) it really is minimal. And if it really doesn't work out, you can always go back to windows.

I've been having the same problem! I'm also using Mull with uBlock Origin and Dark Reader installed. Clearing the cache may be unnecessary though – I've only had to force stop it to get it working again. I'm going to try turning off Dark Reader for a while to see if it's been causing this incredibly annoying issue (my eyes will hate me for this though).