Renoise is just the wrong tool to use in your examples, you’d be better off with a more traditional DAW. I don’t think it’s fair to blame Renoise for doing something that it isn’t really designed to do. You can hammer a nail into a board with the butt end of a screwdriver, but why not just use a hammer?
Having said that, I’ve used Renoise for all of my vocal-based music and its always worked fine. Just plop a “C4” note for each instrument and vocal track onto the first pattern, duplicate a bunch of blank patterns, set the LPB to 1 and the pattern length to 512, and press play. You’ll have to listen to the whole song every time you want to hear a section over again, or you could just render the song as a sample and jump around using slices to check on specific sections. It’s a dumb and slow process but that’s on me, not Renoise.
