I'll give it a try on the PA2 tonight.
Working at a client right now.
Programming in C code ...Fun :-(
LeeS.

you have mail

Quoting Diki

"Try it... stack all THREE RH Parts in a layer, assign them to percussive stereo sounds (like piano, vibes and marimba), then play rapid four note chords. Hear it getting sloppy at all?"

Tried on Ty4.
Vibes, marimaba and various pianos including SA, non SA, cocktail and octave types. 4&5 note chords as quick as manually possible.
Sometimes with sustain, sometimes with auto harmony (block)on the piano.
Couldn't hear any glitches or sloppiness myself - other than my playing

There were known problems with a supplementary premium vocal pack supplied for Ty3. Some people found with a couple of the voices, if they used auto harmony some of the voice notes would become unreliable. (I noted this too.) This was put down to processor speed limitation. It no longer happens on Ty4 with this pack.
One of the key things Yamaha say they did was to use a much faster processor on Ty4 than Ty3.

john