Large HTML tables with CSS styles massively slowing down the browser. I've created a test-case with 15.000 rows for better comparison.
While Firefox and Opera stay very responsive, all WebKit based browsers become extremely sluggish and slow.
This problem only shows up with CSS tables.
Created attachment 55491 [details]
Large Table with CSS (~2.1MB)
Large tables with CSS causing massive performance decrease
Removing "border-collapse: border" leads to better performance. This is caused by us not caching the border information.
(In reply to comment #2)
> Removing "border-collapse: border" leads to better performance. This is caused by us not caching the border information.
Thanks! That's a solution I can work with!
See bug 64546 for optimizing border-collapse performance.