I actually have the exact same problem. First day I installed it, Vulkan didn't work, but DX11 launched fine. After that, 19/20 times it will not launch properly. Vulkan starts the process, but there's no sound or video displayed, and I can see straight through to my desktop. I can't click on anything except Task Manager until I shut the process down, even if I alt+tab around. DX11 loads up a black screen, and if I alt+tab it it is the same as Vulkan. But... if I crit, SOMETIMES it loads up. It probably is around 1/20 times. It's just too bad it takes the launcher so long to load up. Sometimes it loads via the launcher, sometimes it loads correctly by opening the EXE.
Using Windows 7, 64-bit, GeForce 2070 Super, up-to-date drivers (as well as not-up-to-date drivers previously). I have tried every trick people say to use, like running it as Administrator, running the programs in compatibility mode (which I have been doing since I learned that "trick," but I am not sure if it is working). etc.. Sometimes it SEEMS like one of the tricks works, but it's totally unreliable and random, so it's hard to tell.
BTW on the first day, I was using a normal internet connection. Every time thereafter, due to some bull%*)@, I was connecting to the internet via my phone. This may be why the launcher takes so long to load for me. I don't know if the game can or cannot be played in offline more, but assuming it can't, I have no idea why the launcher would need to receive such a complicated approval code to run. I don't see why having a bad internet connection should matter... and frankly, I am not sure if it does matter.
BTW sometimes it launches in Vulkan, sometimes in DX11. I just play it with whatever it launches in.
Thank you, I'm glad to hear that someone besides me is seeing this!! I'm *really* wondering if it's a Windows 7 issue, though I don't know why it would matter...
I can tell you, though, that connection speed/quality are *not* the issue, because I have Comcast internet, 200Mbit/second... it works *fine*, the 60GB initial download for this program took about 1/2 hour...