vorpX Desktop viewer crashes oculus runtime

System specs:
Intel Core i5 4670k
16GB DDR3 1600Mhz
AMD Radeon R9 270x @ v16.11.3 (but kept happening since ever, long before 16.9)
Oculus Rift CV1 @ v1.10
Windows 10 1607 – 14393.447

I’m playing 3D videos in fullscreen on my desktop which i watch in 3D by starting the desktop viewer and enabling the SBS mode. After 15~45 minutes (on the first time) the picture freezes and locks onto screen, then turns to black and when waiting half a minute, oculus home reappears. On the desktop, you see oculus restarting but vorpX must be manually shutdown completely before it works again. This is the best case scenario, in the worst case the PC locks up completely and needs to be hard resettet. Sometimes, you can see unicolored (red, blue, green) artefacts appearing a few frames before the image freezes.

When i restart vorpX after that, the next crash happens way sooner, usually in less than 5 minutes. I would have guessed that my GPU heats up and then starts to fail but vorpX is the only application where i can observe this behavior, for example, i can play eagle flight for 3 hours straight and nothing bad happens.

Anything i can provide for further troubleshooting?