I have switched to fixed velocity when playing multiple synths. That works pretty well and eliminates the problem I was seeing. I can use variable velocity okay if only playing one synth; its weird how that breaks when more than one is played. Still feels like a software glitch to me; the pads themselves are clearly capable of responding well under certain conditions.
Great thanks, I think the volume macro - dB value at 100% range is 0 to -90dB. So it may sound like missing notes with this scale as anything between -90 db to I don’t know, -50 dB is probably inaudible.
So lowering the volume % per patch is the best way to fine tune the response after you select your desired pad sensetivity level.