Soldato
Which cooler are you using?
If you have a Gigabyte motherboard you could try setting core voltage to 'normal' instead of 'auto'. Gigabyte likes to overvolt compared to other manufacturers which can cause problems. Gamers Nexus confirmed that they were overvolting the 5800X3D compared to MSI.
There is no options in the bios to adjust anything to do with CPU, the only CPU adjustable voltage os the SoC voltage, CPU VCore isnt even listed in the bios anymore.