AMDGPU-PRO vs. RadeonSI/RADV & NVIDIA's Linux Drivers To End 2016
At 4K with OpenGL is finally where the AMDGPU-PRO driver performs close to the same as the RadeonSI Gallium3D driver.
And with Vulkan the performance at Dota 2 4K was more competitive too. The open driver stack had run into problems in some cases where the closed-source AMD Vulkan driver did not.
The Talos Principle would run into a video error mode error when trying to launch the Vulkan renderer with AMDGPU-PRO, so unfortunately no results to provide on that front today.