713313 - techcrunch scrolling much choppier, due to different delivery of mouse move events

Status: RESOLVED DUPLICATE of bug 675015

(Core :: DOM: Events, defect)

Description

[Luke Wagner [:luke]]

Scrolling up and down with a touchpad is 10x choppier on FF than Chrome on my MBP.  The choppiness seems to come from techcrunch lazily loading the Like/Share/+1/Tweet buttons when the mouse moves over an article.  With Chrome, scrolling with the touch pad doesn't seem to deliver mouse move events (the buttons don't load until I actually move the mouse w/o scrolling) and there is no choppiness.  In FF, if I move my mouse so that it's not over the content (and the buttons don't load) and scroll, our scrolling is smooth like Chrome.

Perhaps this is just a decision we've made that's Right For The Web but it's bad for snappiness so maybe we can find a compromise?

Comment 1

[Boris Zbarsky [:bzbarsky]]

> Perhaps this is just a decision we've made that's Right For The Web

It's the only way to get things like :hover actually working correctly on scroll, yes?

> but it's bad for snappiness so maybe we can find a compromise?

Bug 675015?

Comment 2

[Luke Wagner [:luke]]

That sounds like exactly what I was hoping for.