Have the same exact issue here. I have an nVidia card on my laptop - I
have ultra slow JavaScript/AJAX performance in Firefox and Epiphany.
The library I mainly use for development purposes is jQuery.
I just downloaded and installed the latest version of Opera, and the
JavaScript performance is perfect - no delays/slowness at all.
Likewise, I have Windows XP running as a virtual instance through
VirtualBox and the performance is fine in Firefox and Google Chrome (I
didn't test anything else there).
I notice the performance problem is biggest in two situations:
1. When JavaScript DOM manipulation is taking place in HTML elements that are
nested pretty deep: When I have the same script running on a top level element
vs. a deeply nested one, the performance in the deeply nested one is a lot
worst.
2. Generally, when working with pretty complex pages. For example,
dragging/dropping elements with a lot of nested elements inside the draggable
container.
Any updates on this issue?
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Extremely slow Ajax/Javascript/CSS performance in Firefox 3 using non-free
nvidia-glx-new
https://bugs.launchpad.net/bugs/223238
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