Αν διαβάσετε το link που έδωσα παραπάνω, υπάρχει και ένα θέμα με emulated και non-emulated midi ports.
Λέει λοιπόν:
"Nuendo keeps a zero-length file called ignoreportfilter in the directory C:\Program Files\Steinberg\Nuendo\MIDI Port Enabler. Using Windows Explorer, you can drag this file up one level to the Nuendo directory, restart Nuendo, and you will now see both the emulated and non-emulated ports. In my experience, you nearly always want the non-emulated ports; you should go into Device Setup and set “Show” to “No” for the emulated DirectMusic ports so that you don’t accidentally use them.
This will only solve your problem if yours is a system where the emulated ports have timing issues. On my system, they don’t."
@Herbert: Όταν λες βελτιώθηκε αρκετά, τι εννοείς;