https://bugs.freedesktop.org/show_bug.cgi?id=42117
--- Comment #17 from mirh mirh@protonmail.ch --- xf86-video-ati 6.14.4 supposedly added KMS tiling https://wiki.freedesktop.org/xorg/radeon/
Could this get performance back to a satisfactorily enough level that we can consider this nonetheless fixed?
Or.. Why here instead the thing is still crossed out? https://www.x.org/wiki/RadeonFeature/