It seems like the autoStart isn't stopping once started, even after you try to swipe the slides around. It should ideally stop once the user interacts with the carousel.

Also, it might be better to use the Utils.requestAnimationFrame method if possible, because it's much better for battery life, performance, etc: http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/. You can see an example of requestAnimation use in our .update method.