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Petition Calls on Microsoft to Extend Windows 10 Support | PCMag
(www.pcmag.com)
This is a most excellent place for technology news and articles.
Its a combination of Vulkan and Valve paying devs to work on Proton.
Vulkan is a fantastic Graphics API. Vulkan is more optimized than DirectX, and it's so much better than DirectX that the DXVK (DirectX to Vulkan) Wrapper that Proton implements makes games run better, despite the fact it's running through an obfuscation.