So I just did something and it has completely fixed the squeals for me. I had very minor, quick one since I did it 15 minutes ago but I'm not concerned about it. I'm downloading heavily (which I could never do and have clean audio together) and my pc is busy doing other things too, and yet all is well.
What I did was go into the device manager, right click on my Firewire card which is "LS1394 OHCI Compliant Host Controller." I chose update driver software. Then browse my computer. Then let me pick from a list. Then I chose the standard "OHCI Compliant Host Controller." Basically, I set it to use a generic driver as opposed to the one Windows had installed for the card.
Please try something similar on your system if you are having firewire issues with Motu gear.
Thanks for such a great forum.
