Sorry for the confusion, to make it clearer:
I use BIAB on Mac and on PC with the same interface for both. I switch my Monitor, Mouse,Keyboard and the interface with a KVM-switch, which work fine for me.
I have the issue with silence at bootup only on the windows-PC and it's still there if I use the ASIO driver for the Audiofuse Studio interface.
To find out what happens I temporarly changed the driver in BIAB to the ASIO4All driver, with the result that the tracks will render at bootup.
That means BIAB has an issue with the ASIO driver of the Audiofuse interface.
The workaround is to load the style again after bootup, also in the plugin after loading the file and generating the tracks. so I have to do that twice.
I was supprised that the audio driver has an effect on rendering the tracks in BIAB.
Hope that clears it a bit.


Norbert