phenomenally slow performance dragging windows around (was: xrandr: adding a second display to screen 0 [radeon])

[martin f krafft]

also sprach Michel Dänzer <michel at tungstengraphics.com> [2008.02.19.1854 +0100]:
> >     Option          "AccelMethod"   "EXA"
[...]
> I guess it doesn't happen if you use XAA or if you limit the virtual
> size to within 2048 in both directions?

Yes, using XAA fixes this. Thanks, Michel. Do you know of a good
piece of documentation to read to understand this?

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