recently i upgraded my pc, i bought an i5 4690k that i have overclocked to 4.4ghz and an msi z97s sli krait edition motherboard to support the cpu, the issue i am having at the moment is that after a while, when i begin playing a game where i was getting 60 fps+ on highest settings but my performance tanks down to around 37 fps in dying light and 27 in crysis 3, this is really frustrating and can be fixed temporarily by a reboot and a quick look through the bios, i have overclocked my processor and have increased voltages accordingly, i get aroud 55oc when gaming and 60-70oc when stress testing, is there something limiting the processor in any way that i can deactivate, i have not checked through cpu features and the only thing i have disabled is a thermals limit and and c1e state, could somebody please help me out as it is very frustrating to deal with