Originally Posted by
Eric Chism does this really cause sever nausea?
I think it depends on a couple reasons, I've only listed 2 below. There are other things. Generally if you are using it for under 20 minutes, you should be fine.
1) The person who is using it
2) Frame Rate / Refresh rate (preferably 90 or higher)
Some VR devices are better than others. I wouldn't recommend the Google Cardboard if you are susceptible. Each year that goes by from now on things will greatly improve

There is a great article
HERE which explains some of the stuff.