Thanks for the suggestion, John, maybe I've misunderstood you, but if you're speaking about choosing another VSTi on the thru channel slot, once choosen the ASIO4ALL driver, it doesn't work either.

In my opinion, ASIO is great and very useful in many situtations, I use Asio4all all the time with other programs, and a lot of modern audio interfaces need it to work properly, but unfortunately it doesn't seem to work very well in BIAB. Maybe it's an area that need some rework in future versions of BIAB.

Latest BIAB version, latest build.