I've heard MIDI cascading noise before, where it 'catches up' like Mac said, but this doesn't sound like it to me; this sounds more like audio.

I've also heard multiple RealTracks playing at the same time for a measure or two, which sounded a lot more like this - musical but "suddenly way too much at once". It hasn't happened to me in about three years, though.

Just for curiosity, since you say it happens on different RealTracks and styles, so there is no pattern, I wonder about your PC. Version 2013 of BIAB does require more 'horsepower' than earlier versions. What is your Geekbench score? If you have a relatively slow PC, you could try some of the options in the Opt., Preferences, RealTracks dialog box for slower generation of RealTracks.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.