Hanging MIDI Notes

Thanks for the recommendation for Midi Monitor. Still new to Cubase Pro 8 and never saw that.

I inserted it into a MIDI track and played a C# minor chord and the monitor showed the Note On and Note Off messages, but I could hear the C# hang.
Screen Shot 2015-05-13 at 10.10.51 AM.png
Another thing I noticed as I played this chord a few times is that I could hear notes cancel themselves out. I think there may be some MIDI loop going on here and I can’t see how to stop it. Here’s a shot of my Preferences:


After some research, I learned that MIDI is 8 bit and transmits 31,250 bits per second. My MOTU interface has USB 1.1 and is 412 megabits per second. The iMac is USB 3.0 and transmits 5000 megabits per second. Now, I don’t know if that means that USB 3.0 is sending data “faster” or that it is simply sending “more” data within each second. If 3.0 is in fact sending data faster, maybe the 1.1 can’t handle the data. However, I was only sending a 3 note chord, not a whole ensemble.

I’m stumped.