Michael,

You mentioned garbled sound. Is it all distorted? Or does it stop and start a lot? Can you upload an example as it may help us determine your problem.

Matt's buffer suggestion is the way to go. In my DAW, Studio One Pro 5, I use a low buffer setting to record. But when I get all of my recording finished and I'm adding effects and such I have to increase those buffers. What are your buffer numbers?

Technically you should be able to run ASIO in BiaB, shut down BiaB, then run RB with ASIO drivers. I run BiaB in MME and my DAW in ASIO so I can have them both on screen and usable simultaneously.

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

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