Whether Camera is the parent of a Mesh (in example below), or the other way around (in my personal project), when moving "fast" at speed = 1000, eventually there is some (discrepancy) jitter visible on the mesh - although it's probably the camera that isn't set correctly (some matrix?)
http://www.babylonjs-playground.com/#P1YTR#1
Just click, rotate some, then hold Up and Left arrows and wait til the jitters come, at a few seconds in. Just an example of keys used. Even after stopping, if you try to move a bit or look-around, the jitter is already there.
A painful bug for my space sim, where I need to move sonic faaaaast! 