I've watched Netflix movies with no issues. The max session time I've ever done in VR is about 4 hours but that was playing a game and had no issues except the imprint from the headset in my forehead... I definitely know people that can't play at all without feeling sick though so ymmv.

only 12 hours? :)

Fair point.

I play VR shooters for 3-6 hours most days of the week.