That's right. I forgot that point of the MOTU send all the data from 16 channels down a single cable via firewire.Might just be bogging doen the system.

One track in RB is assigned to the internal soundcard on my lappy to drive my harmonizer. The other tracks are assigned to one of three pairs, panned and out to a HW mixer via a PCMCIA card that is installed into a PCMCIA>Express slot adapter.. Then from the HW mixer the Aux send goes to the in of the PCMCIA card and the last two pairs come back to the mixer AUX return. The PCMCIA card serves as both the bans and the effects processor,ie reverb unit. Then I have a USB interface that is ASIO for my bass.Not the same setup as yours of course but pretty funky and RB just keeps on going without complaint.

John
ESI Gigaport HD+
Lenovo Turion II /4 Gig Ram/ Win7x64 be
15.6" Monitor
"The only Band is a Real Band"
www.wintertexaninfo.com/BANDS/JohnnyD.php