From the common issues article regarding Gear-VR submission:
“App must begin accepting input, respond to head tracking, and display graphics within 4 seconds of app startup”
Since the custom Unity Plus loadscreen for VR seem to have severe problems with head tracking, we tried to implement our own (using LoadSceneAsync() and Application.backgroundLoadingPriority = ThreadPriority.Low). However, even though my loading scene is only a camera and a textured rect, it still takes 6 seconds before it shows up. What can we do to reduce initial loading time?