I have been work on the TS 2020 route building and it is working in about half of my screen. The box in the top right to enlarge the image is in a gray shade without the black frame so I can't get it to fill my monitor screen. I there another setting I can go to?
When you first launch the game and the Drive, Build and other buttons appear on the main menu, look up in the top right for a small button called settings, in this go to graphics settings and change from fullscreen, windowed or borderless, you can also change the screen resolution here too, you can set it to your native desktop screen resolution, or a smaller than native resolution combined with windowed mode allows you to access your desktop whilst in the editor, handy for accessing folders or reading/watching tutorials whilst you follow them in game.