For those looking to perhaps see a few more frames per second (or FPS), you can now check out Doom running on the Vulkan API. Earlier today, support for Vulkan went live for the game.

To make the most out of Vulkan, new drivers for both AMD and Nvidia users have been released.

A handy FAQ has also been posted by Bethesda to see what this whole Vulkan thing is all about. This includes questions like, "does my graphics card support Vulkan?"
Does my graphics card support Vulkan?*Vulkan is not currently supported on NVIDIA GPUs with 2 GB of RAM on Windows 7 or on the GTX 690. Users with these GPUs need to run DOOM on the OpenGL graphics API.