I just got Arma 2 for DayZ, and I've been having problems with my HD 7870. My CPU is FX 8320 OC'd to 4.3ghz, 2x2 1600mhz RAM (4gb's of ram is not the problem, I checked in the resource monitor and it only went up to 2.9 gb). Every single other game I have runs fine, just Dayz... I set the quality to lowest and I get 10-15, then highest and still 10-15 fps.. I have latest drivers also. I changed the config file in the Arma 2 according to other people having lag problems, and still no help. What can I do?