Overheating issue in app development

I am facing an issue of overheating on simply playing a 360 video in Unity with basic pause/unpause UI and audios. It just lets video play for about 2 to 3 times. We target it to be played at least 6 to 7 times. Its just a 3:33 mins video. with codec h264. (265 is not supported in Unity VideoPlayer). I am using Unity 5.6.1 and testing in Samsung Gear VR.

Are there any oculus settings I am missing? Please, anyone who can help me with this? Thanks in advance.