You probably know this already, but I figured it might still be worth opening a topic about this: Scrolling discussion pages in Chrome is janky. It seems to happen on any topic pages, but it’s easiest to see on lengthy topics.
This might be non-trivial to fix. It seems related to the way Discourse implements infinite scrolling, as Ember views are being rendered while scrolling.
Maybe the performance improvements coming down the pike with HTMLBars will alleviate some of this (I hear it’s 2-3x performance), but it will still be hard to consistently get under 16ms.
Twitter seems to be doing an OK job at 60fps infinite scrolling. Maybe we can learn from them.
(There is an old thread about Discourse scrolling performance, but I didn’t want to resurrect it…)