I found this it was posted back in 2021 BBPlugin v3 showing the speed of midi only (data) generation compared to audio render generation.
The Plugin only needs the data to play 96bars in 3 secs same as Sforzando plays the data for audio instantly.



Originally Posted By: musocity
https://www.kvraudio.com/forum/viewtopic.php?t=554589
Tue Oct 27, 2020
v4.0 is the biggest development in the history of RapidComposer. Both the internals and the user interface have been reworked. As a result new features will be added more quickly in the future, with less bugs or stability issues.

The plug-in has been rewritten from scratch, and became self-contained, which means bridging to the main application is not needed anymore (which proved to be fragile in some cases).

Why ? what drives these guys to do this ? are they on performance enhancing drugs ? why do regular updates and fixes ? why add suggestions and new features regularly ? self-contained plug-in that's craziness isn't it ? shouldn't this be done on a yearly basis and not day to day ?
I said "guys" but it's just 1 guy. Baffling mystery !

I wonder, I just wonder does anyone here believe in miracles ? as we could sure use some.

https://stash.reaper.fm/u/ReaTrak (Scripts for Biab Reaper)
Working In Biab & Reaper Simultaneously and Instantly