Did you manage to go to space multiple times, or did you get nausea from the space trip? ahha
Jokes aside: Should it be lower speed? It is not the first time that I hear it! :)
Use some kind of "cushion". Maybe make it a coroutine that slowly speeds up the movement. Currently it goes from 0 to 100 immediately. Make it go from 0 to 100 in 0.5 seconds or something. So it more smooth