Sorry if this has already been asked, but I searched around for 20min and didn't find anything.

Since patch 4 my frame rate has dropped and the game is just stuttering along. It was running fine before the patch but now it's so slow it's pretty much unplayable. Not sure what changed. I know the patch was big, but I have plenty of space, although I'm not running it on anything special. A pretty basic, albeit new, gaming laptop.