Vulkan vs. OpenGL Performance For Linux Games
Dawn of War 3 with low quality settings at 1080p saw the Vulkan performance being superior for both the Polaris and Pascal graphics cards.
The CPU usage with this game also was lower when using Vulkan.
Dawn of War III at high quality settings really wouldn't be a playable experience with this hardware, but for those curious about the performance difference, the OpenGL performance was slightly faster on the Radeon GPU while the GTX 1050 Ti still was running faster with Vulkan.
The average and peak CPU usage remained lower on both graphics cards when using Vulkan.