Kalashnicow

Somehow, I have managed to solve my issue. I just disabled and enabled OpenIV.asi and the ASI loader again and again, and now it works?
I'm not sure either, but atleast it's working.

Hi again!
Yes I have reinstalled all of those, that is how I concluded that it was OpenIV.asi that was messing up.
I've run out of ideas, I might reinstall a fresh copy of OpenIV, just to see what happens.
One detail though that I have left out though is that it properly loads my custom startup movie when I start the game, meaning that it probably isn't entirely broken

It was apparently my outdated version of Windows 10.

Put the following settings to high or above.
PostFX
Shader Quality
Shadow Quality