Just curious: how comes that the velocity layers limit your polyphony experience ?
I would think first that you never use 2 different velocities at the same time for the same note, does not one should stop the over (like in (note-on1,vel1),note-off1,(note-on1,vel2)) ?
Is this the sustain pedal effect combined with the velocity sample change that saturate the EXS24 ?
Sorry in advance for my naive question.