BF6 - 5-30m in game freezes for 1sec then computer reboots

Driving me nuts.

BF6 runs for 5-30 minutes (sometimes slightly longer) then game will freeze, screen stops for 1sec then computer does full reboot. 

Seems to be happening since latest update. I did full restore then reinstall of windows 11 as well and it didn't fix it. Didn't have this problem before. Thought it may have started since I started playing with a raspberry pi and opened up some server settings but the win11 reinstall would've reset all that. 

Haven't tried other games yet. Wanderburg is fine. Reinstalling HD2 to try that out.

Not CPU/GPU overheating, last reboot was at 77C/65C each.

Latest drivers/bios installed. No overclocking. Memory is on turbo mode 6000 MT/s.

AMD 9600X / NVIDIA 5070 / 32GB RAM

Any advice is appreciated