Mobile Javascript Execution Speed

[xFrieDSpuDx]

This is a great offcanvas menu system. By far the most flexible and attractive I've seen. I've looked into the javascript execution on mobile devices and a lot of lag can be eliminated by using something like fastclick to reduce the browser delay, but the execution is still slow. Oddly, changing the initial scale to something like 0.5 or 1.5 eliminates this delay completely. The closer to "1" that you get, the slower the execution.