HI David

I use Biab with my Yamaha CVP 405 no probs.
However I do not use a midi interface, I send midi over the CVPs Usb midi to host cable to the pc. I have installed the Yamaha midi driver on the pc, also a win 10 64bit.
No need for any midi interface this way.

Mike


BIAB2021 UltraPlus,AsusN55S1Tbssd, W10/64,Akai EIEpro
Yamaha CVP405,SquireStrat, CoolsoftVMidSynth
Novatation Impulse61 Ctr kbd, Cwalk blab Kontakt

http://mikesmusic.byethost16.com/