Same here with a radeon Mobility FireGL 9000 (RV250). I had a look at https://bugs.freedesktop.org/show_bug.cgi?id=24074 and the problem disappear when downgrading libgl1-mesa-dri to 7.5 or 7.4, so it really seems to be mesa related. Anything I tried in 7.6 and 7.7 branches was horribly slow and buggy for me.
Same here with a radeon Mobility FireGL 9000 (RV250). I had a look at https:/ /bugs.freedeskt op.org/ show_bug. cgi?id= 24074 and the problem disappear when downgrading libgl1-mesa-dri to 7.5 or 7.4, so it really seems to be mesa related. Anything I tried in 7.6 and 7.7 branches was horribly slow and buggy for me.