For Win 7 200(+) is recommended,, for XP 120 is recommended. No idea why..

These are recommended starting points.

I like to use the latency adjust app inside RB to set the numbers, then use the same settings in BiaB.
Click the Latency Adjust button in the RB Midi Devices window to find it.


I do not work here, but the benefits are still awesome
Make your sound your own!