DirectX the API compared to Vulkan: whatever. DirectX as a whole product: yes. For the two middlewares Unity and Unreal, on real applications, DirectX 11 will

DirectX the API compared to Vulkan: whatever. DirectX as a whole product: yes. For the two middlewares Unity and Unreal, on real applications, DirectX 11 will have better latency (lower CPU time mostly), DirectX 12 performance will be higher throughput (greater FPS), but neither will be by very much. Like a single application on ordinary hardware, it won’t matter. But for the thing I measure, occupancy, you can get something like 3x as much efficiency with DirectX on Windows compared to the same application on Vulkan on Linux.