I'm not sure why but this version is considerably more resource intensive (i.e. laggier) on my modest work PC than this version I saw on Twitter today: http://c

I'm not sure why but this version is considerably more resource intensive (i.e. laggier) on my modest work PC than this version I saw on Twitter today: http://codepen.io/stuffit/pen/KrAwx http://codepen.io/stuffit/pen/KrAwx