I think the problem is worse than that. Here's a small jsfiddle showing that JavaScript's onmousemove is inherently laggy: http://jsfiddle.net/z8h6y787/ http://

I think the problem is worse than that. Here's a small jsfiddle showing that JavaScript's onmousemove is inherently laggy: http://jsfiddle.net/z8h6y787/ http://jsfiddle.net/z8h6y787/ Also see this page: http://atebits.github.io/browser-input-latency/ http://atebits.github.io/browser-input-latency/