Maybe this will help: https://developers.google.com/speed/articles/reflow https://developers.google.com/speed/articles/reflow Edit: ah, posting the same link a

Maybe this will help: https://developers.google.com/speed/articles/reflow https://developers.google.com/speed/articles/reflow Edit: ah, posting the same link at the same time... But I think the best tip is: be shallow. A lot of things trigger reflow but DOM-depth is causing slow reflows.