Aorus GTX 1080ti Xtreme | Crash then runs fine after re-start?

[kcpfargo]

Since installing my Aorus 1080ti Xtreme I've had a hard crash (hold power button to re-start) after 1-10 mins gaming (only gaming). Then after the re-start, it runs fine (for up to at least 6+ hours).

• 
  ■ I've tried multiple DDUs
  ■ Updated all drivers (including mobo).
  ■ CC cleaner
  ■ Overclocking/Underclocking (any attempt to change using AB etc causes instability)

Before re-start, when I watch the temps etc I notice that the card get fairly hot and the fans seem ineffective. Yet after the re-start, my temps stay good and the fans seem to do their jobs.

The situation isn't the end of the world because it's predictable and after the re-start runs great. I'd just like to be able to play without the need for the re-start.

Specs:
Mobo - MSI X99A SLI Plus
Chip - Intel 5820k (OC'd to 4.3)
RAM - Corsair Vengence DDR4 (2x 8GB)
GPU - Aorus GTX 1080ti Xtreme
PSU - OCZ StealthXStream II 700 W PC Power Supply

 

[jankerson]

Post system Specs including PSU make and model.

 

[kcpfargo]

Post system Specs including PSU make and model.

Specs Updated