Quote:

Ian, ASIO in BiaB and WDM in Sonar.




This is how I've configured things also.

Growing up with Cakewalk (since 1994) and many subsequent versions WDM has just been the default for me.
I've never figured out if the efficacy of one driver is actually better than the other.
But, it appears from comments here that ASIO has less latency on many systems.

I'm pretty pragmatic in my recording process having a few midi modules, 3 or 4 vocal tracks, rhythm & lead axe and that's about it.
So, I'm not the power user that many may be so driver model (for me) may be inconsequential.
For the one song I have completed in BIAB I exported to audio then imported all tracks into Sonar X2.

Per previous comment I also right click/run as administrator just in case some grief may rear it's head.

Hope you're having some success.

Carry on....