Try to deactivate the Traffic. Worked for me.
Look at this Thread:
scroll down to my settings. Hope it helps.
For information:
I would never overclock anything on the power supply or on the hardware. No way. If the PC is factory-set to OC, .. ok. But never do it yourself if you don’t really know what you’re doing. especially not the RTX3080 which already has enough power for all current games