I'll chime in on this: I own a Vive, and get sick using that after half an hour maybe (even though it's not too bad and I can keep using it), and it takes me a

I'll chime in on this: I own a Vive, and get sick using that after half an hour maybe (even though it's not too bad and I can keep using it), and it takes me a few hours to "reset" afterwards. I don't get sick in 3D movies (but I don't enjoy them, and never choose to see one in 3D if there's an alternative. The reason I don't get sick in 3D movies I assume is because it's still just a screen, and any head movement I make is still 100% "responsive", with no delay or mismatch. Edit: Sorry, I read your response a bit lazily. Yes, it's not related to vergence-accommodation, at least not exclusively.