I think you misunderstood (?).
For example, i want to play Witcher 3 in Immersive Screen Mode. But i don’t want to be able to turn away my head from the screen, the screen should stay fixed.
The dude from Stereo3DProductions demonstrated the default vorpX setting where the head AND the camera moved at the same time. But his setting was like 50%. So i thought maybe when it’s on 100% you only move the content *inside* the screen, while the screen itself does not move.