https://bugs.freedesktop.org/show_bug.cgi?id=93826
--- Comment #33 from Yves W. yves.weber@yahoo.de ---
But that's still using the radeon driver, right? If so, it's possible to narrow down the exact kernel version where the problem was introduced, or even the exact Git commit using git bisect.
Yes the original module that used by default - so radeon driver. The info with amd-gpu-pro driver was just additional info :) it's still beta.. and fps as much worse than using the radeon driver.
Sorry, but I don't know what you mean by "using bitsect".