No software is perfect. Here are the common complaints about this version:
5.6.0 brought a noticeable improvement in BPM detection and beat grid alignment, especially for complex genres like Afrobeat, live drummers, and tracks with tempo drift. The dynamic analysis mode (for non-quantized music) became more reliable, reducing manual grid edits by an estimated 30-40% according to user reports on Pioneer forums. rekordbox 5.6.0
Developer/advanced user notes
For users on High Sierra or Mojave, you must manually allow the audio driver in System Preferences > Security & Privacy after installation, or rekordbox may not recognize connected hardware. No software is perfect
If you prepare a USB drive in rekordbox 5.6.0 (with beat grids, hot cues, loops), a friend using rekordbox 6 can read it fine. But if they modify the drive and hand it back, version 5.6.0 may fail to load their changes due to database schema differences. Developer/advanced user notes For users on High Sierra