Now that we have an official DayZ UU sub-clan, I figured I'd share this article on how to improve your FPS in DayZ standalone. This info has helped me greatly on several occasions.

 

Follow it step-by-step, or pick and choose as you wish.

Thanks kevin, this helped me a lot. I applied some of the things from that website and it improved my fps. I still recommend shadow as very low. It makes you lag a lot less.