Computer specs
i9-9900k [4.8ghz] 8 cores 16 threads
AORUS z390 extreme [mptherboard]
AORUS RTX 2080 Ti 11GB [WATERFORCE][WB]
64GB RAM [3000mhz]
nvme ssd 1 TB
HDD 10TB
HX1000i CORSAIR [PSU]
Watercooled

This machine is a dream and I've tested it to be able to run two copies of Shadow Of the tumb raider at 4K flawlessly!
With both copies open the CPU and GPU both sit idle at 45 degrees celsius utillizing around 40-90% of their maxmimum process capacity
I can run FF14 at DirectX9 at 4K with the settings jacked to MAXIMUM and not break a sweat.
But that ****ing direct X11 keeps auto-shutting down my PC the moment a cutscene starts, AND THATS EVEN AT 1080p WITH THE GRAPHICS SET TO LAPTOP STANDARD!

Something is REALLY wrong with the DirectX11 and I have tried everything from updating/reinstallign all drivers, to REINSTALLING WINDOWS AND THE PC HARDWARE.

I am at my wits end... Last night it crashed again during the SHadowbringer cutscene at the end of the MSQ and the shutdown caused errors resulting in my browsers and Gygabyte apps no longer working, even after reinstalling them.
I've reinstalled windows (again... 3rd time) because it was the only way to fix the browsers and the Gygabyte apps.

Could someone please help me figure out whats going on here???

The shutdown occurs during cutscenes and if I set the graphics to maximum when I run the game in DirectX11.