Pascal GPU’s are also running it but they seem to have much worse issue’s with the fallback path likely due to the older age of the arhitecture.
Some of the performance issues for AMD and Nvidia would be because the devs simply didn’t optimize the fallback path (which would likely be a lot of work to do well).
I mean the 5700XT is literally running the game. And based on the DF video it can even run it somewhat well if you play with the settings enough.
Its just that its running it slower than cards with support.
Pascal GPU’s are also running it but they seem to have much worse issue’s with the fallback path likely due to the older age of the arhitecture.
5700xt has some hardware for primitive shaders which should have launched on vega but was broken, so likely that is being used, which Pascal has none.
Some of the performance issues for AMD and Nvidia would be because the devs simply didn’t optimize the fallback path (which would likely be a lot of work to do well).