[Bug 84648] Lag/Pause When VRAM->GTT or GTT->VRAM transfer occur

https://bugs.freedesktop.org/show_bug.cgi?id=84648

--- Comment #7 from smoki smoki00790@gmail.com --- (In reply to commiethebeastie from comment #6)

Created attachment 113077 [details] ETS2 with GTT-usage:100

My 3Com U.S Robotics modem 56k works more faster than the GART memory.

Yeah i can confirm that with ETS2, but also with any earlier 18 Wheels of Steel games (http://en.wikipedia.org/wiki/18_Wheels_of_Steel) played in wine (i have all of them :)) have same very worse stutter... try how it goes with reverting this mesa commit, it fixed that worse stutter in those games for me on Kabini APU... well and other issues:

https://bugs.freedesktop.org/show_bug.cgi?id=88658#c6

And yeah please use at least kernel 3.19 or later if you test that