i have a 7850k amd cpu running a GTX 960 ssc 4gb. but in some cases i do notice bottlenecking. like no matter how bad my settings go to it still lags high or low. i know there must be someway to make it stop i just need help with it. should i try to overclock the cpu?? or get 7870k? or higher. my mother board is GA-F2A68HM-H