>>400669393
If you're getting motion sickness from the beginning of the game I'd probably try playing something else to get more settled in and get your vrlegs. Swimming and driving sections will not be a good time for you.
In general, the best way to overcome motion sickness in VR is to continue using it regularly. Play up until the point where you start to get uncomfortable, then stop and come back to it later. You don't want to push too hard and start to associate VR with that sick feeling.
re:gpu lower framerates definitely make motion sickness worse from what i've heard from friends, but it only really bothers me personally when i get sub-30ish fps