Hello all, new to GOG. I can't manage to get Cyberstorm into fullscreen. When I launch the game the monitor is being set to 800X600 resolution (native 1920X1080)

I have tried
- All the compatibility modes
- Reduced colour mode
- Run in 640X480
- Disable fullscreen optimiations
- All the different scaling modes on my NVIDIA controle panel as well as Override mode set by games
- Tabbing out and manually resetting the monitor resolution (this just gave me a full sized desktop with a tiny Cyberstorm window in the middle)
- And editing the Sierra.inf file

Any help would be appreciated