Mine starts the song, but then that line starts to show that all the parts are being regenerated and the song stops, or stutters, while it is trying to regenerate the parts.
1:
I now understand that you are looking at the Top Form Caption and that you see it start generating
again after you have previously placed a check-mark in that check box and pressed OK and then selected the
Generate and Play button.
2:
if that box is checked, this additional generation
does not happen on my system.
3:
Can you comment also that you don't have any frozen tracks? I'm not sure if this is related.
4:
If you save, then select File > New to start a new song, and then select Song Settings, does that box show as unchecked?
5: And then if you reopen the original previously saved song, and then select Song Settings, is that box still checked - without you having to re-check it again?