PS - if you are overclocking, or your card came OC, the game has an issue with it. I would downclock back to whatever is normal for your card, doing so helped me avoid (many) crashes. It hasn't fixed the stutter and lag, but I've just put vsync on and capped it at 60 fps for the time being. The stress comes from the game jumping from 60ish fps to 100+ back and forth with wild variability. Capping your framerate should help with that. Half-sync (72 on a 144hz) is also working fairly well. As for the CPU's, they have multiple memory leaks and the game is depending a lot more on the CPU than GPU.