Comment # 3 on bug 95474 from Jan Ziak

(In reply to Alex Deucher from comment #2)
> Can you identify what component caused the regression?  mesa?  llvm?  kernel?

That is a good question, but I do not know the answer.

Data:

Kernel: 4.6.0
Kernel module: radeon.ko

Resolution: 1920x1080
Game quality setting: Ultra

CPU: A10-7850K
CPU utilization: 120% (kernel-space is about 10% CPU)

GPU: R9 390
GPU utilization (radeontop): >>>> 15% <<<<
GPU performance level: forced max clocks

Based on this, it seems that the user-space component (mesa + llvm) is the
bottleneck.