Intel i9-14900K Crashes (sigfault or Kernel Panic)

[SpectreDeveloper]

Hi guys.

My setup:
I9 14900K
Z790 AORUS ELITE AX DDR4
32 GB 3200 MHz

My issue:
I’m a developer and I have a python script that use all cores at the max possible 100%, 24/24h
I’ve set the POWER LIMIT TO 253 and POWER LIMIT TIME TO 448.

Temps are good, around 50 grades

But performance are rly bad.
1k single core - 10k multi core.

When launch my program with my power limit settings all works fine, but performance are really poor.
If I try to set stock settings or enable turbo boost, it goes on kernel panic or sigfault.

I’m using Ubuntu.

Any advice?

Thx

[Charizor234]

Have you made sure to update your BIOS version? It could be outdated. That was a major issue for me with my z790

[SpectreDeveloper]

Yes updated to latest version of 2 June.
Microcode was rev 0x123