This is due to some DXGI nonsense and I honestly can't be bothered to fix that, because documentation is extremely poor and there's a very high risk to introduce regressions to many other games. Just use borderless mode and avoid tabbing out, with DXVK there's basically no difference to "real" fullscreen mode anyway.
Also, log files please.
Thanks a lot for the answer! I will try the borderless mode then. And sorry for the absense of log files but it was an optical issue and thought the log files wouldn't show anything useful. Thanks again and I muchly appreciate your efforts with DXVK.
Nothing extracted yet.
After the loading screen and when the game engine has loaded being on the main menu. The game gets almost totally unresponsive to the mouse or keyboard inputs.