OK but lets have faith. Unity's been doing wonderful things in the lighting department - the DXR stuff, SRP, so I am going to give them the benefit of the doubt. That was all inhouse. Enlighten isn't inhouse and seems a battle of attrition to keep it relevant. But the performance and quality bar is clearly set with the GDC stuff. So it would need to be quite async and quite compute shader optimised. Just not DXR (obviously scaling to that but as above links show, 0.6ms without DXR is a very good thing). We want something that runs from toaster to starship. Time of day? Dark inside when light outside? Open world? Those are my requirements and unless you've solved them... It's not vert cols is it?