PC Random Shutdown

[SmoothOperat0r]

Small Edit: The Ram is actually 4000mhz but im underclocking it to 3600 since the infinity clock maxes at 1800 and the 3600 cant really push that limit like an R7/9 can. The 4000 kit is on the QVL for this mobo.

 

I have a ryzen 3600, X570 Tuf Gaming Mobo, EVGA RTX 3070 FTW, Corsair RGB Pro 3600mhz (Yes on QVL) all being powered by a gigabyte P750GM PSU...............

 

I got the thermal shutdown (Fans go full blast) thing happening randomly while gaming. I setup my RGB fans to show CPU temp never get close to 85, and yet it still does random thermal shutdowns. GPU is sitting cool at under 60 when it happens. ram 40-50c when it happens. So I cant find anything that's overheating. Intake is 30-35c exhaust is slightly higher 40-45c. Its installed in a A400 Mesh case neutral airflow, everything I see is saying my cooling solution is more than optimal. 

 

And it happens at different loads, I could be running cyberpunk with no problem for hours, but 5 minutes of Valheim sends it over the edge. And sometimes it doesnt happen at all.

 

No overclocks (cpu, gpu), ram is running standard DOCP settings.

 

Its gotta be the PSU right?