And presence is characterized by lack of nausea.
If your only experience with VR is cell phones or the Playstation 4, then you probably have never experienced presence.
I just got my third sensor a couple days ago, and it has made a night and day difference (there is also an option for 360 tracking with two sensors, but I didn't set that up). But even when I had two sensors the tracking was fine except under certain situations where my body would occlude the controllers. Not a problem anymore after the third sensor.
Article about it: http://www.thisisinsider.com/doctor-strange-how-you-should-s...
When new movies come out, google "should I see it in 3D $moviename" type articles. Unfortunately it's January now; not many good movies coming out.
Obviously, that doesn't help very much since it isn't in cinemas.
3D as we know it is probably never going to happen. Most movies don't gain much from more immersiveness, and the tech may always be clunky. I've seen some VR movies lately, and I predict they will supercede 3d entirely. Whether they'll end up being the next fad is an open question.