In the end, I went into the BIOS and turned off XMP and manually set my ram clock speed to 6000Mhz, as that is what my DDR5 is. Didn't touch anything else. Played for hours.
What does your Event Viewer say?
I am not seeing anything in the event viewer.
At the bottom of your DXDiag.txt there are error messages for Live Kernel Event.
There should be more info in Windows Event Viewer and also a crash dump file in Documents\BattleField 6\Crashdumps
I wouldn't go too far down the rabbit hole of chasing error messages since they can be caused by hardware errors, which is most like the cause of the crash.
davek1979 and Heradon89 have given you good advice. Start by updating the motherboard BIOS firmware. If that doesn't fix the crash then try disabling XMP. Then move on to lowering the GPU frequency.
Do each step one at a time.
I did have a Live Kernel Event a couple of times early on when trying to run the game. It would crash to a black screen and I had to force restart the PC, but that stopped happening after I updated my BIOS. That being said it still crashes to the desktop.
