How The RadeonSI OpenGL Performance Has Evolved From Mesa 11.1 To Mesa 17.1 Git
While the Civilization VI Linux performance leaves a lot to be desired still even with Mesa Git, its performance has improved over time...
Counter-Strike: Global Offensive has seen big performance improvements since Mesa 11.1. Going from Mesa 11.1 to 17.1-dev yielded a 30% performance boost on the R9 285 and a 33% jump on the Radeon R9 Fury.
Besides correcting visual defects in older versions of Mesa, Deus Ex: Mankind Divided is a hell of a lot faster since Mesa 17.0.