https://bugs.freedesktop.org/show_bug.cgi?id=109171
--- Comment #10 from Sherif ali.sherif10@yahoo.com --- I restarted, logged into KDE then $ dmesg >> dmesg. After a minute, $ DRI_PRIME=1 dmesg >> dmesg2. Did I do it correctly?
(In reply to Alex Deucher from comment #2)
You need a relatively advanced 3D game to see an advantage on the dGPU as you have to overcome the overhead of the additional copies.
Counter-Strike: Global Offensive is much slower, when I run Steam with DRI_PRIME=1.
Additional Info: I installed Steam from RPMFusion.