I have had my current build for nearly two years now. It consists of an fx-8120 running on a GA-990-FXA ud3+ motherboard, A amd radeon 7790 hd series video card, eight Gbs of ram and a 650 watt PSU, But as of late I have been having horrid performance on games such as bf4, arma 3 and dayz. When I usually have little to no issue running them. What should I do?