rekordbox doesn't work smoothly. E.g. playback stops frequently.

Three main factors can cause this and there are three possible countermeasures:
■When the Windows built-in sound device setting is the cause
See case 4 in the troubleshooting guide [here].

■When the connection or other equipment is the cause
An unstable connection with your PC/Mac might cause this problem.
To solve this, shut down your PC/Mac and disconnect all other USB devices and USB hubs. Then, connect the XDJ-RX3 directly to a different USB port.

■When your system (PC/Mac) is the cause
Doing the following might solve the issue:
- Quit all other applications.
- Disconnect from the internet and exit security software.
- Turn off wireless connections such as Wi-Fi or Bluetooth.
- Turn off power-saving settings.

If your computer's system doesn’t meet the requirements of rekordbox, it might cause the issue. See details on system requirements [rekordbox.com].