GearVR - Jittering on rotation of parent object of the VR camera

Hey,

I have a moving platform, and I attached the VR camera to it, as a child object.
Moving up/down/right/left/wherever - works fine.
But when I'm rotating the platform - there are some jitterings.

I think that it related to low FPS, but I'm not sure - as other animations works fine while the jittering happens.
I also tried to do the rotation on LateUpdate, FixedUpdate and Update. But it didn't help.

Also, I did a little experiment:
I took the example maze scene of Unity.
I added more...

GearVR - Jittering on rotation of parent object of the VR camera