The Unigine Sanctuary and Tropics technology demos were also plagued by the invalid memory reference problems with the new driver.
Xonotic with low quality settings didn't really see any performance changes out of the driver upgrade.
When moving to Xonotic with higher image quality settings, the Radeon HD 5770 and Radeon HD 6570 graphics cards ran at the same speed as compared to the earlier driver release. However, the AMD Radeon HD 7950 performance on the new AMD Catalyst Linux Beta had regressed noticeably.
While the Source Engine Linux performance may be improved by this new Catalyst Linux beta, OpenGL performance regressions for other games/workloads seems to be common. For the Unigine Engine tests and Prey, the new driver failed outright in the tested configurations. It looks like AMD's new Catalyst Linux beta needs a lot more time to bake.