While some of the menus are still not active, the Settings, pause in game (P Key) and loading level are implemented. Most of the graphic settings are working, which give the option to test the speed of the game with many configuration. High end graphic cards are supported with options like DLSS or Raytracing.
Here is a video showing the game loading settings and in general user interface.
Note that the video recording is slowing down the game by at least 10 FPS. On my GT 1060, the game is doing a solid 45 FPS in 1920x1440.