Unity 5.12 Fixes Ubuntu OpenGL Performance Problems
Written by Michael Larabel in Software on 11 June 2012. Page 5 of 7. 9 Comments

Reaction Quake3 was faster with Unity 5.12, but its performance is still rather challenging and odd on the open-source Mesa/Gallium3D drivers.

The more-taxing Prey, Warsow, and Xonotic OpenGL games saw little change in performance between Unity 5.10 and Unity 5.12.