Radeon Windows 10 vs. Linux RadeonSI/RADV Gaming Performance
Total War: WARHAMMER was released last May for Windows while the Linux port arrived in late November. As is common right now for many Linux games, this Windows D3D11/D3D12 game has just OpenGL support on Linux without any Vulkan option, at least for now.
With low image quality settings, the RX 480 was under 70% the speed of Windows 10 when using this open-source Linux driver stack while the R9 Fury did a bit better in this context.
The results with ultra image quality settings for Total War: WARHAMMER showed RadeonSI still has space to advance.