I've always used F9 (instant). To me, F7 (snap) is just a slower transition to the same view. Maybe that creates nausea in some?
If I recall, I think instant was preferred because it was quicker. To me, if I lose track of the nme then making a view transition slower isn't going to help. That said, I'll try F7 and see if it makes a difference.
Regards,
Malta