P6P rooted with current updates as of the November. The P6P video is straight out of the camera. It was recorded with Active stabilization. I'll have to re-do the test with the default stabilization to see if this is an issue specifically with Active setting.
The GP footage has a slight sharpening done as it was recorded with low sharpening which is practically no sharpening on the firmware currently on the camera.
But bottom line the pixel for whatever reason the video is... less than expected.
The out and back were recorded separately and both recordings had the same issues.
I'm aware one of these is a phone and one of them is an action cam but if this is indeed an artifact of the Active mode on the Pixel and not possibly a hardware problem with this specific pixel then that mode is worthless. Further testing will tell.