Radeon Software 18.20 vs. Mesa 18.2 RadeonSI/RADV Linux Driver Performance
Thrones of Britannia is Feral's newest Linux game port and is using Vulkan. While it's been running fine on RADV since launch, the PRO Vulkan driver via Radeon Software could only run successfully on the RX Vega 64... The Polaris and Fiji graphics cards both hung while running this game using the 18.20 driver.
With Deus Ex: Mankind Divided, the RadeonSI Mesa driver continues to offer much better performance for this demanding game than the PRO OpenGL driver.