Google VR Tons of flickering

I followed the ‘Google VR Quick Start’ just to compare to Unity, and on my Nexus 6P, the edges/center of the screen flicker like mad, with just the ground plane in.

Any ideas what would be causing it, or how to fix it? The Unity Google VR setup worked as expected, I’m not sure what is wrong with the basic Unreal setup.

I posted in the forums about a month ago (with a video of it), and still no responses:

Any ideas? I don’t want to go forward if even the basic sample can’t work :confused: