Wayne Youngman wrote:

P.S I have CPU interface enabled. Is there some options that make a CPU
overclock less stable? (spread-spectrum etc)

Spread spectrum could theoretically cause minor instability, but the
worst is the CPU Disconnect feature.
It lets the cpu run a lot cooler when idle, but will also cause a
semi-large temporary drop in Vcore, when the processor goes directly
from idle to 100 % active - and that could make it hang or even reboot.