Ubuntu 20.04 LTS vs. Linux 5.9 + Mesa 20.3-devel Radeon Graphics Performance
The F1 2017 Vulkan-powered racing game on Linux didn't budge much with the new driver stack.
The Linux-native HITMAN game rendered using OpenGL was flat across the four graphics cards tested.
For HITMAN 2 that runs on Linux via Steam Play and rendered with Vulkan via DXVK, there were some performance gains to find with the updated AMD Radeon open-source driver code.