Macho, have you updated the motherboard bios to newest on ASUS website? If not you probably should do that first.
If you have a good CPU 1.2 or maybe a tiny bit less is good for default speed, try 1.25 and check for temps and stability, if OK lower by .05 volts and test again until unstable then up .05 and test again, the lower voltage may require higher LLC setting, can you post more info in your screen shots, CPU-Z, Hwmonitor, stress test you are using, etc. that shows all temps and voltages please
Your minimum temps seem a little high, what is your ambient temps?