Mike, you were right, that was the easiest thing smile

To those who still have doubts. It was confirmed by PG that every time you press "generate/play" button, BIAB goes to the source files on your hard drive. or where you store your files, does not work with them (keeps them) in memory.
Ram has very little to do with the time it takes to render/play composition because of re-indexing. Horrible approach...

If they were kept/worked in memory it would take much, much less time.