Make sure you guys take a moment today to check out this Ashes of the Singularity: Escalation - DX12 & Vulkan analysis at Overclockers Club today.
Looking at these benchmark results, which are admittedly synthetic, it seems it is best to keep to DX12 for the GTX 1080, as it saw a drop in performance, even though the CPU frame rate increased. The driver overhead also became more consistent with Vulkan, but if it does not manifest as better performance, there is little point. Of course, this may change with updates to both the game and the drivers. On the Vega 64, however, switching to Vulkan improved performance, even if the driver overhead also increased. Average frame rate and CPU frame rate increased under the newly-added API for this recently released GPU, so it is possible we could see further gains here in the future.
