Shadow of the Tomb Raider on Linux is one of the rare exceptions where the AMDGPU-PRO Vulkan driver delivers noticeably better results than the RADV+ACO driver at this time. When using the PRO Vulkan driver, the Radeon RX 6800 XT was again behind the RTX 3080 but ahead of the likes of the TITAN RTX. The Radeon RX 6800 was successfully aligning with the RTX 2080 / RTX 2080 Ti.
For Total War: Three Kingdoms the Mesa performance on the Radeon RX 6800 XT was again in good shape with the RX 6800 XT reliably competing with the GeForce RTX 3080 graphics card.