I don't play Rocksmith (my kids do), so I lack perspective. In my opinion, if this particular score is not played with the correct note durations, it would sound incredibly wrong.
If I choose to disable the option to truncate short notes, are there undesirable side effects? Just trying to understand why this "general rule" might be so. I can certainly understand it being hard to see what's going on without truncated notes in busy passages, but I don't think that's an issue here.
I built a cdlc with note trunction and had my kids play test the song. They complained about it not sounding right, but they also helped transcribe it so they're quite familiar with it. I also built a cdlc without note truncation and had them play test the song. It didn't crash the game or cause any weirdness and there were no complaints.
I guess I'm looking for guidance on when it's appropriate to disable short note truncation. I haven't heard that it should never be done, but at the same time I'm not seeing encouragement to do it.
Oh and since "general rules" were mentioned, would there happen to be a list somewhere?