Comentário oficial
Omar,
Provided you have properly installed the Big Sur-compatible drivers following the instructions, have firmware v1.12 installed the DDJ, and are using the latest version of rekordbox, there should be no issues with playback / performance. It's possible there is another conflict ... another application or service causing problems. If you still need assistance, please file an inquiry ticket here and our support team will gather some additional information to assist you in resolving this issue.