OK here goes

> How much RAM do you have
64G
> Does the unceremonious exit still occur if you reboot and then run only BIAB?
I rebooted and ran only BIAB and it happened again.
> Does Windows ever crash, or just BIAB?
Just BIAB. My Win machine has been very stable.

> Did this just start?
Yes. Since BIAB 2022 and v908 but more with v912

Question
Can I use [bb2022_win_update_build908] to go back

> What were you doing at the time?
It seems repeatable. Load a SGU song(75 bars).
Open Recent Styles load one, play and listen
(on repeating this cycle 1,2,3 times >>> Poof, Gone!

> Did you change your audio driver, or
I did NOT knowingly.

> did a recent Windows update make changes (it happens)?
Unclear how to be certain, the update page is highlevel.
On the surface It does not seem to have touched an audio driver.

Question
? What can I use or Where can I look to see more detail?

> Sorry - I ask all these annoying questions only to assist in diagnosing. You never know what will lead to the solution.

No No, Thank you. I take it as helpful good diagnostics.