I've got a massive music library (2000+ tracks) on a USB for my ’23 Toyota bz4x, but the system seems to choke on it. 500 tracks = all good, all can be displayed and played. 750 = only artists A-G and numbers show. 2000+ = just A-B and numbers! WTF? Is this a known issue? Any workarounds like folder structures or different USB formats? Driving me nuts!