This happens to me too sometimes on my MacBook if I have lots of Junk files or my RAM is near full, or just when my computer is heavy in general. Try deleting junk files in VS and VSCode, or clean up your computer in general.

Really, I'm just a noob so I don't know how exactly it works, but a quick rampage of clearing cache and junk files usually does the trick. Quite annoying though.

I hope this helps.

(This is my first time answering a question. Please give me feedback for improving if I did anything stupid and forgive me. For those who might think this should be a comment, remember: I don't have enough Reputation.)