Can confirm this. In my one week old P3D-, the rear view camera is very jerky. The problem is exacerbated by the fact that sometimes it's as smooth as butter, other times jerky, other times smooth and then it starts to stutter really bad.
The car's sonar saved me a few days ago while backing into my garage. The camera had been working nice and smoothly, then suddenly started lagging behind, then froze for two seconds or so. I didn't realize how far behind real time the camera was until my car beeped at me about the stuff that was now rather close to the rear bumper. Right when the car beeped, the camera updated, and jerked everything in frame much closer to my car.
As of now, it simply isn't reliable enough to safely use for backing the car up.
