software

No, officially the DDJ-800 can only be used with Rekordbox. 

But can be MIDI mapped to Virtual DJ, djay pro and Traktor. 

While it's true that the DDJ-800 can theoretically be MIDI-mapped to software like Virtual DJ or Traktor, doesn't third-party mapping completely disable the internal on-jog display screens? The high-definition jog wheel screens are the primary reason people buy the DDJ-800 over cheaper controllers, so wouldn't losing real-time track metadata and cue waveforms defeat the purpose of using this specific hardware?

Many hobbyist DJs frequently test various PC mixing software and legacy audio tools shared across digital portals like bagas31 official before committing to dedicated ecosystem licenses, but isn't native integration critical to avoiding audio dropouts during live gigs? Has anyone actually managed to get jog-wheel latency and scratch response feeling 100% accurate on non-Rekordbox software, or is the hardware lock-in simply unavoidable?