I’m not sure I understand. Why is stretching the Cubase window, or what I call the “shell” over 4 monitors okay with projects with 2 or 3 tracks, but not 100 tracks? I have 4 21 inch monitors. In my set up 2 monitors have the mix console in full screen so really I only stretch Cubase over the other 2 monitors.
For the past 15 months the biggest roadblock for me has been lack of key commands to set focus on full screen mix consoles. Using KC’s on a keyboard, plus my Icon mix console, I don’t have to mess with the mouse much.