Offizieller Kommentar
Hey guys/gals, if you are having rekordbox performance issues, please file an inquiry ticket here and our rekordbox support team will be able to gather some additional information to assist you in resolving this issue. It's the best way for our software engineers to determine the cause and create a fix. As @Jerrett says, there may be a beta which already addresses your concern, so you're always free to try that version first, but if that doesn't help, a ticket will. Thanks!