I had some motion sickness when I first started VR. I made a little thing that I found on reddit that helped. It's just a vibration disk hooked to a battery and attached to a headband. You position it behind your ear on the mastoid bone. I don't know why it works, but it does. I eventually got my VR legs and can play for hours without motion sickness, most of the time. Some games still eff me up, though; like The Break In, which I love, but can only play for an hour before I get sick.