I first toyed around with launch options and put "-w 1920 -h 1080" and that didn't work. So I then went to DayZ.cfg and changed the resolution w/h and render w/h and that worked at first. After playing a while I must of hit a button or something and my screen resolution got huge and now everytime I open dayZ no mater what settings I change everything is extremely grainy and large. I keep editing the config file to try and fix it and nothing is working at all...