Rob, isn't TC Helicon a vocal harmonizer and not an audio interface? That might be your problem but I don't know for sure.

Try running your on board sound card (audio interface) and see what happens. If it runs ok then the problem is with the TC Helicon. If so then you may need to invest in a audio interface.


Why is it that doctors call what they do 'practice'?
If flying is so safe, why do they call the airport, the terminal?

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware