I have my i5-6600k clocked at 4.5 ghz on an Asus z170-a mobo. In the bios I have manually set the Vcore to 1.28v but while stress testing my OC I see voltage spikes of up to 1.39v on some cores. My temps are ok at around 57°c during the stress test. I'm also getting somewhat regular crashes while playing cpu heavy games like witcher 3 and Ashes of the Singularity. I wan't this OC to be 100% stable, but I'm uncomfortable with raising the Vcore more because of the spikes, even though my temps are good. PLS HELP