Just want a simple behaviour where each 'new' note slides into itself FROM the pitch of THE PREVIOUS NOTE...!
That's how Portamento has worked on literally every other synth I've ever played (I'm in my 50s - that's a lot of synths)
Most of the patches on RetroSynth seem to either glide in one direction only regardless of the direction of the melody (like if I play a 'downward' line, reasonably expecting the glides to be downward in motion from last-played-note to next-played-note but ALL the notes glide UP from some arbitrary pitch lower down that I haven't played!)
they exhibit totally random behaviour - never the same twice when playing the same line..? and each 'new' note shooting in from a pitch way higher of lower (doesn't seem to be predictable or consistent which 'direction' the glide comes from either) than the previous note???
and then at other times not gliding at all - like, I'll play the line to 'feel out what the glides are going to sound like' before I commit the line to a midi performance - and as I play the line a few times it'll start out (the glide) shooting around all over but then as I continue playing it stops doing it all together?
Driving me bonkers!