Completely broken for me, at least for now. Infinite loading screen after character creation. What utters me the most, is the contrary info from the official sites and the downgrader nexus page. The downgrader alone is broken as hell. There is newer, updated version on github (you have to read about this in the comment section from a random user), which works with a few workarounds, but still not that great. Then the creators recommend some mods, which either break the game or are not compatibile with the game version they're running on. Very sad to see such a messy release after such a long time. Hoping to reviewing this after a few patches and a streamlined, coherent, official(!) install guide.
I tried several configs and workarounds, and and and... the game just doesn't start. When I boot up the game, the screen goes black for a couple seconds, then puts me straight back to desktop. No error, nothing. Few others have this problem too, so be warned. Maybe you're lucky...