wrt to motion sickness make sure the lens are as close as possible and you adjust your IPD/PD (pupilar distance) accordingly. Apparently the VIVE has a button for this and quite important one too when it comes to optics. Those who where glasses should even have this value in the prescription.
Also, for the VIVE users at least, try the thinner pad (I've read the one that's default it's the larger one) and it seems that you can change it for the thinner one and again, the closest to the lenses the better.
Also, try to play with the world movement slider. I don't know if it impacts VR (it should) but it should mitigate with all the bouncing (probably).
Still waiting for mine and it's killing me![]()