Buffering
UI is slick, and the potential for short and fun snippets of VR is there, but even on a fast wifi network with 50 megabits down I could not get through a single video without stopping to buffer. You also cant tell how long you must wait until it catches up. At least this recent update seems to have fixed many of the crashing bugs.
Mister Darcy Lau about
Discovery VR, v1.3.0