I have the similar issue right now.
I have random PC reboots at some events in the game. No errors showing, just spontaneous reboots.
Today I had three stable reboot at giants deep inner core, but it happened in outer places too.
- Windows 10
- NVIDIA 1080 MSI
- Intel Core i5-3570k
- 16 GB RAM
- SSD 1TB Crucial
I'm running game in fullscreen mode and with VSync on. I checked CPU and GPU usage via MSI Afterburner,
CPU temperature ~50 °C and GPU max temperature was about 70 °C.
I checked errors in Event Viewer, there are no errors today.
This happens only with this game, I played for a long time Destiny 2 or Cyberpunk and there were no such crashes.