Hi guys, I've had this problem for a long time now even after I upgraded my GPU last year from a 660 Ti to a GTX 780. During combat sequences, my FPS drops to about 22-25 FPS. I'm not sure if anyone else has had this problem, but if you have, or a have a fix, could you help me out please? 
Thanks!
Spec:
Intel Core i7 4790K - 4.4GHz
ASRock Z97X Killer
EVGA FTW GTx 780 - 1056MHz
24GB DDR3

Thanks!
Spec:
Intel Core i7 4790K - 4.4GHz
ASRock Z97X Killer
EVGA FTW GTx 780 - 1056MHz
24GB DDR3