[stahlhart]

You have a bad mount, I suggest redoing it ASAP.

And optionally looking at a contact frame to replace the ILM, if results from repasting/remounting aren't sufficient to contain the throttling.

 

[stahlhart]

Your CPU is throttling/overheating because your cooling needs to be remounted

Try 1.1 VCCSA or at least 1.0
0.816v seems off in the readings....

Try 1.26-1.35 CPU VDDQ

try 1.28 vdd, 1.28vddq

I've been running ~0.9V VCCSA since ADL (12700K, stable to 5.4GHz, 13700K stable to 5.8GHz).

 

[stahlhart]

When you say you cannot get the RAM to post correctly, do you mean that you are not able to set an XMP profile for its rated speed? Have you tried setting the memory up manually?

What is the exact part/model number for the RAM kit?

Edit: the QVL for the motherboard lists Dominator memory kits at 5200 -- not sure if it matters or not, but you might not have supported/tested memory for this motherboard.