Aw dammit, it's a shame that didn't help. I'm not sure what other options you can use at this point.

My own experiences have been up and down as well, though I'm usually fine as long as I can keep my FPS above 10.


This next suggestion might be tedious, but you could consider for the time being- or at least until the devs do some more optimisation- to keep your game sessions to a certain length and take a break periodically to help your computer fully uncache the game.

This is kind of a lousy solution, but it's one of the last things that I've found can help when nothing else does when trying to squeeze more frames out of a game I've been playing for a while.

EDIT: I found this on youtube https://www.youtube.com/watch?v=jAUiwMLH6AA