Because async doesn't do what you think it does. https://www.stevesouders.com/blog/2012/01/13/javascript-performance/#comment-3659 https://www.stevesouders.com

Because async doesn't do what you think it does. https://www.stevesouders.com/blog/2012/01/13/javascript-performance/#comment-3659 https://www.stevesouders.com/blog/2012/01/13/javascript-perf...