I have a i5-3570k oc'ed to 4.0ghz and a GTX 670 FTW and im barely getting 100fps in CS:GO on the lowest graphics settings. Other people that have the same setup as me are maxing out at 300- 400 fps. The only reason this is an issue is that i want to stream and when i try it dips even lower to around 50- 60 fps. Could it be my ram possibly? I have 8gb of RAM. Also when i play the game my CPU usage is around 50%.