this video shows it all.

When i select my MPK225 midi controller, no problem.  But when I choose a MIDI-out from a synth (Notemapper), it also enables the Virtual Controller as an input as well - which is causing problems.

This happens with ANY Midi-out from ANY synth.  it is not my VST exclusive.
 
https://youtu.be/yUpzCUNB-vo

Big YEAH!!!
 
Notes move off grid lines ,things go out of tune ,portamento never plays right.
 
It Is the Sys Ex problem with communication and Sonar are not bothered about us midi minions!!
 
Audio is fine but my Tyros 5 has headaches,not to mention me after paying all that money out.
It Is about time someone got to grips with this problem.
OR ARE WE A MINORITY at the bottom of the Vauxhall Conference football league.
 
 
All the best
John