I found some cool videos recently where a dev added movement based on swinging your arms like you would when you walk. That seems like possibly a more fluid thing even though a youtube user noted getting sick anyway based on some of the speed in a provided demo. Sadly the dev isnt sharing any code at the moment just videos.
Overall i think there isnt a way right now to solve everyones sickness…best solution i can come up with is have teleporting and a walking method…and hopefully the game can be enjoyable regardless of which option the player choices. I’ve never gotten sick myself as of yet. But i did almost fall over one day sitting on a sliding platform in a demo…so it is interesting to see how easy the human body can be throw off balance.