Ok I've kind of fixed it, listen up.
I was looking into the launcher's settings and noticed the option to run the game on 32bit, thought I'd try it out.
The game is a loooot more stable now, fps went up from 33 to 120 (i have my cap at 120).
Maybe you can try it out and see if it helps.
Idk why this helps tbh, I was playing on 64bit all the time before this issue, never had a problem, then all of a sudden it's a problem, well whatever, I've fixed it and I'm happy.