MovieTexture + VR = "Unaccounted" hits performance

Hi guys,

I'm trying to play a video into Unity using VR, using a simple Movie Texture. My problem is when the video starts, the profiler shows a "Unaccounted" line, which takes 60% of the frame (and I see huge spikes in profiler). To be simple it cuts my framerate by 2.

I already converted my video to .ogv to help conversion at runtime.

Where does this performance issue come from ? How to get rid of it ?

Thanks a lot in advance !

PS : Unity v5.4.3p3

 

Same thing just happened to me. Did you figure it out? Maybe it's a framerate of the movie (24fps?) vs VR's 90fps?