RadeonSI Polaris: Mesa 12.0 vs. 13.0 vs. 17.0 vs. 17.1 Git
Surprisingly, even Dota 2 with OpenGL appears regressed on Mesa 17.1 compared to 17.0.
With Metro Last Light Redux is at least an OpenGL workload not appearing regressed and performing a few frames higher than Mesa 17.0.3.
There wasn't much to see from the Team Fortress 2 results.
Not much to see with Tomb Raider.