This has been resolved. Turns out it was a windows update that was the required fix, just incase anyone else was having the same problem.

Hmm I see that. I recently moved and i set it up and had my main display plugged in to the wrong port, which was obviously running off that other card. It has now been corrected but i still see no option invidia to select a main card, only auto select or gtx card designation. Tried reinstall again, ...

I have a Geforce GTX 1080. No other GPU. This is a desktop. Followed link instructions, set to auto select (GTX 1080 is only graphics card) but the problem still persists.

Worked Previously before Aeldari DLC Clean install, Verified steam Cache, Disabled Windows Defender, Fresh install after windows defender off, Verified cache after windows defender turned off, Repeated all steps after a reboot. Launcer comes up but it i see a window pop up on my task bar and steam g...