PT 9's Delay Compensation is a joke. It doesn't even work. Maybe it's just my system. So since the ADC is not working, every time you use an AUX you get at least an 8 sample delay.
Even with the channels empty I'm getting this nightmare!!!
Try effects processing a voice, you really notice it then.
The channels can even be empty and when you send thru multiple aux's (daisy chain ) the delay is increased maybe squared. ( 8x8 )