hpb Hey! Sorry for the late reply. The 2700p gearvr download is intended for the users with phones capable of running these files.
The truth is that even some "fastest" or "newest" phones can't handle them. For examples, my EU S8 can run these videos with no problem, while a US S8 or even higher will have problems you described. So its basically a chipset issue and some phone won't be able to run it.
I hope it helps with you question