Quote Fixed performance regression in OpenGL renderer. Vulkan should now only be significantly ahead in situations where GL was unable to keep the GPU busy.

Quote Performance issue with kernel 4.9+ related to online mode.

Crash on boot on NVIDIA without GLVND (e.g. Debian). Can be worked around by installing libgl1-nvidia-glvnd-glx on Debian.

Article taken from GamingOnLinux.com.

The OpenGL performance regression that made Vulkan look like it annihilated OpenGL in Mad Max's recent Beta has now been fixed.As a small reminder, Mad Max currently has a public beta for owners of the game to test out Feral's new Vulkan version. You can enter "livelongandprosper" to get access to the "vulkan_beta" branch.From the notes on Feral's Facebook post Great to see Feral very quickly act on feedback from us and others about the performance issues.They also note they are currently looking into these issues:Any feedback about the Vulkan Mad Max beta should be sent to: vulkanfeedback@feralinteractive.comHow have you been finding the Vulkan version?