Have you tried turning off the camera-bob effect in the graphical settings? Also try to dim your screen a bit and try that. You're experiencing SimulationSickness, which you can get some pretty good tips from here: https://www.youtube.com/watch?v=CvimYs7tnRM The video is put out by PennyArcade TV's ExtraCredits, and well documents the theory, and how to overcome it.
Have you tried turning off the camera-bob effect in the graphical settings? Also try to dim your screen a bit and try that.
You're experiencing SimulationSickness, which you can get some pretty good tips from here: https://www.youtube.com/watch?v=CvimYs7tnRM
The video is put out by PennyArcade TV's ExtraCredits, and well documents the theory, and how to overcome it.