I am running the newest ATI opensource drivers on bleeding edge Archlinux Linux distribution. I experienced that moving windows is very smooth like scrolling but resizing windows is very choppy. I recorded it: http://www.youtube.com/watch?v=ThJNjjkTzFo Note that this isn't a video glitch with the lag. It's lagging really.
I'm afraid it may be unrealistic for this to become much better without something like Wayland.
Also note that xchat isn't exactly famous for efficient text rendering.
Mass closure: This bug has been untouched for more than six years, and is not obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.
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