Associate
You probably will at first, but you become immune to it after a couple of weeks of short sessions. It made me really sick at first but now I can play for hours and feel fine.
I got my rift about 18 months ago and had exactly the same experience. Now I can play Alyx on smooth movement/smooth turn set to 50 and games like Dirt rally 2 as long as I like with no motion sickness at all.