When I play DayZ I have the settings at around medium-low, and at best I can get 40 FPS, when I'm walking through cities however my FPS will drop to around 15-20. Does anyone have an idea to fix this please? My PC Specs: Processor - Intel® Core i7-3820 CPU @ 3.60GHz Graphics card - 4GB GeForce GTX 690 Ram - 8GB