Brutal Doom FullScreen Issue Thread

Hi there I have today found the Brutal Doom mod (I'm very late I know lol) from this page: Moddb.com

After running the "gzdoom - PLAY BRUTAL DOOM.exe" file it works fine, except for when I Alt+Enter to make it fullscreen. At that point I lose video but the audio is still present. When I Alt+Enter again to get it windowed the video is still not there but the audio is, and I need to close and retart the file to get it work again. Can this be played full screen? How can I set it so that it works? I just want to play this amazing looking mod in fullscreen . Thanks for any help.

edit - this can be deleted, found it in an unexpected part of the menu, thanks anyway