I fix this by going into task manager and viciously force quitting any system process that has an enigmatic name or isn't plainly doing something I want to happen. Often it's updating Edge, or it might be indexing temp files for searching with the shitty search function that I don't use. Sometimes it's "Windows Problem Reporting" that's making things glitch and lag. Oh, sometimes there's a whole second copy of Explorer running invisibly, quitting that can help.
I don't know! It's a reckless thing to do, but satisfying. I tend to stick to killing the same relatively small set of processes, really, and have never noticed any ill effects in about a year. If I was less lazy, I'd research them all - but then I'd want to also research how to stop them running in the first place - and in some cases, like Edge, that threatens to be such a mission that I don't want to embark on it. (I have a script that's supposed to uninstall Edge, but I thought I should read and understand it before I run it, and that was months ago and I never did ... so I still have Edge.)
