The post is about having a vst to send VstTimeInfo to Biab.
That would not be a problem.
The thing they were worried about is that Biab is old and it don't have a decimal/fractional tempo map if the DAW has.
This can be sorted by changing the playback % to sync with the DAW, then the Tracks have the ACID tempo written to them so the simply fit the DAW tempo map when dragged in.

That has nothing to do with old users with old hardware.

The other Gen/Play Direct is for the BBPlugin that a lot of users don't like as it's not as quick as Biab to generate, same deal why RealBand is not as popular as BIAB, BUT could be with the Instant Gen/Play Direct.

IF IF the Gen/Play Direct Non Destructive Editing was added to main Biab it would simply have an option for doing things the old way or the new way.
"I want to play direct" Ok I will play direct.
"I don't want to play direct" Ok I will render the files to RAM and play it for you.
"I want Non Destructive Editing" Ok I will reference the source files.
"I don't want Non Destructive Editing" Ok I will write new wav files.


See below the Midi Tracks Gen time, this is the same way the Instant Gen/Play Direct will work for RT RD Audio.