[Bug 206231] R9 280X low performance with all games

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=206231

--- Comment #34 from Jacques Belosoukinski (kentosama at whiteninjastudio.com) ---
(In reply to Sylvain BERTRAND from comment #32)
> > Is there a reason to have such poor performance with Dirt Rally compared to
> > the
> > Windows version which should run at an average of 70fps during the
> benchmark?
> > I
> > noticed that the GPU load was low on the benchmark unlike other circuits
> > where
> > the GPU load is 100%.
> 
> Ok. What settings did you use in the benchmark to compare dirt 3d engine on
> windowsDX and linuxGL(mesa)? all to max(often ultra)/on?  with msaa?
> 
> We must run exactly the same settings.

Ultra settings with 8xmsaa, no vsync and 1920x1080.

I base myself on the different benchmarks visible on Windows in ultra with the
R9 280X and 8320.

I did a benchmark with the settings on low, no xmsaa, no vsync:

min: 48fps
average: 71fps
max: 95fps

I run a benchmark with Heaven 4.0 with ultra settings :

FPS:    31.4
Score:  790
Min FPS:9.2
Max FPS:        
71.8

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