I had a similar experience with the motion sickness especially on the Esses coming back into Watopia and in titans grove When I first started. I use an iPad. I chalked it up to the climber unit . However my iPad was mounted on my handlebar and I was looking down to it and it was super close. subsequent to that, I created a u shaped aero bar using pvc pipe With about 1 foot of length and attached my aero bars to that … I think that helped a lot but the other thing as other posters have written which really helped the most was I basically rode each of the routes and through that learned the map so that I knew what to expect which made a huge difference . Hope those ideas help.
Ride on !