Offizieller Kommentar
@Victor > Please ask the user to contact us regarding his playback issues on the CDJ. There are no known issues regarding playback, however there has been a firmware update released (v1.10). Please see this page for downloads for the CDJ-2000NXS2.
Regarding compatibility, there is currently no HID support for Serato or Traktor, however as it is a MIDI-compatible device, it would work with Virtual DJ, Traktor, djay, etc. with no issue - users would have to configure the mapping themselves.