I’m not too knowledgeable about nDisplay to be able to recommend it for this purpose. Glancing over some it’s documentation it seems like you’d be able to utilize multiple cameras without split screen. However it does seem like the solution will be significantly more complex. I couldn’t figure out a way to pull it off without player controllers being attached. The alternative is editing the source a bit, which also could be a deeper challenge than just not generating more viewports past 2.