So I just tried a 3D movie on a giant VR screen and holy shit, I think I just realized why so many 3D movies are so eye straining in scenes with motion. It's because they use motion blur. It doesn't bother you on a flat screen because it's flat and your eyes don't need to change focus. When you have 3D and your eyes are trying to change focus and resolve the depth of an object, and it's all blurry, your eyes are unnecessarily taxed. Why didn't the movie industry or 3D TV industry figure this out? Is it because their level of 3D tech was just too shit to see the problem? I mean I think I've watched a 3D movie in a theater like 2 times in my life so I'm not really sure.