This may be totally off the wall... I am new here too, but I too have been around Sequencers and Studios for a while - though I detest set up issues (!!!) .

I"s BIAB 'fiddly' with most VSTis? Does this issue have to do with whether the softsynth is set to GM mode or not? What's the deal?"

I was wondering what you want to do? I have never had hypersonic, but I am guessing you want to run it as the synth that generates the GM sounds? I have found that certain VSTs will not load in Band in a box. I first laboured under the misconception that BIAB could load any VST and then you could just play along with it - for example you might want to load Absynth and play a few pads. Not so. The VST slot is for a gm synths only (I think). If I had succeeded in loading my piano then ALL the sounds would have been piano. When I tried it flashed in th box for a second or two then vanished. I have had to use MME for BIAB and Asio for a standalone (quality) Piano runnning outside the box - this works for what I need (I have not tried to record).
Have you tried MME.
Q2]Have you looked under Options MIDI/Audio set up Audio settings button? (bottom corner).

I have been advised to not select the MS wavetable synth even when the DXI is supposed to 'overide' it. Hve you tried ForteDXI? There is a trial version.

BIAB is a little ideosynchratic at times. I have hads to reinstall BIAB a couple of times - once because of weird driver issues - not the same as yours but giving weird Asio behaviours.


Your in good hands here with the other (far more experienced) posters, I hopew this is not irrelevent I generaly leave set up to engenerring types (like those on the forum) but I for one was not sure what you are trying to achieve set up wise.

BTW I got fantastic support here and at PGHQ to get it right.


Zero

Win 11 64, Asus Rog Strix z390 mobo, 64 gig RAM, 8700k