Just bought a new gaming pc literally just so I could play this game but for whatever reason anytime I end my turn in the campaign mode the fps drops drastically and just never recovers. Making the game unplayable. From what I've been reading it might have something to do with the AMD processor? I have a Msi Radeon HD 6870
Twin frozr ii gpu, an AMD fx 4100 quad core 3.6-3.8 GHz processor, and 8 gigs of ram. It was professionally built I just don't understand what's going on. Any help would be appreciated, thankyou.