I just recently am having these issues with jerky movement in a game, I never noticed them before compiling and testing in CJS, the movement was always smooth and after switching to Crosswalk to support some 3rd party SDKs, the jerkiness is pretty extreme on layout starts and random times throughout play. It's really weird, game is running at 60fps but the jerkiness of the player movement is still there, which is actually game breaking for my game cause it causes you to die. I can make a blank layout with a tiny sprite and movement it with bullet, moveTo or just with the move forward and i get this crazy jerky movement, I've noticed the same thing with other engines such as Phaser, jerky movement just tweening a sprite from point to point. Looks like I'm going to have to switch to a non HTML5 engine, which sucks cause I really like C2.