Well, there were many settings in the old default .ini that did nothing but were set to some random value which might be used now. So, keeping the older settings around means a few new settings will be random (until you set them yourself).
lol none of Robokabuto's NSF's play properly except for a couple for reasons I can't know. The N106 channels completely screw up in a hilarious kind of way.
I think the N163 channels attempt to play the entire wave/channel memory, not sure why that happens. Perhaps an option to limit wave sizes to 32 samples would be a compromise to avoid this issue?
I've seen a few older Robokabuto NSFs that don't set the high bits of the waveform length properly (they have been poorly documented up until very recently).
Jrlepage I don't see anything at all wrong with the one you posted. Until the N163 starts playing, the uninitialized channels have a 0 in the length field (which means the length is 256 samples). Once they start playing, the lengths look fine.
Yep, it's broken. The NSF needs to be fixed. (Sorry, but there's no way to autodetect if the NSF is built improperly; and providing an option would only exacerbate the problem of there being invalid NSFs out there. Get the NSF re-exported.)