In my game a objects (bodies) move each frame and it does not matter I use Box2D or Nape.
//for example
var body:Body = createNewBall();
addChild( body.graphic );
addEventListener( Event.ENTER_FRAME, loop);
private function loop():void {
space.step(1/30, 10, 10);
}
But Starling use animation with jugglers. Perhaps it somehow affects performance.
var body:Body = createNewBall();
addChild( body.graphic );
var tween:Tween = new Tween(body.graphic, 2);
tween.animate("x", glX);
tween.animate("y", glY);
Starling.juggler.add(tween);
But how to use the jugglers in case enter_frame animation?