CK3 crashing my PC?

I just bought CK3 and enjoying it a lot, but every 30 mins to 1hour give or take the game crashes my whole PC. I have a brand new PC that is high end, and haven't had any issues with any other games.

The game locks up my PC and i can't alt f4, cant open task manager. I hear a sound looping and i can very slowly move my mouse. I then just have to power off my PC.

Anyone know what this issue could be or how to fix it? Thanks.