This isn’t as bad as I expected - I’m very pleased to see a full featured open source graphics driver stack too. I really hope Intel give the Arc series the long term developmental support this platform needs to mature. I expect the performance to improve with time, much like the older AMD 7900 series cards did.
Could the problems with these GPUs when playing older games with older DirectX versions be solved by using DXVK as a shim around Direct to try and make use of the better performance in Vulkan? My experience is that it works pretty well in most games, specially older ones, so I can see this being a potential solution to this new architecture.