1. Increase Audio buffer size.

・Models that support WASAPI with standard Windows drivers( DDJ-400, DDJ-SB3, DDJ-FLX 4, DDJ-FLX 6 )

　[Case rekordbox]

　　Change the Audio buffer size in rekordbox.

　　Open rekordbox > Preferences > Audio > Configuration panel

　[Case Serato DJ Pro]

　　Change the Audio buffer size in Serato DJ Pro.

　　Setup > Audio > USB BUFFER SIZE

Models with its own audio driver, increase ASIO buffer size from the Setting Utility.

Below is an example of the DDJ-1000 Setting Utility.

2. Turn off applications on Windows start up

　[Case Windows10]:

　Start Menu > Settings > Apps > Startup, turn off apps.

　[Case Windows11]:

　Right-click the "Start Menu", then you will see the menu below.

Settings > Apps > Startup

Set to “Off”, so the application does not run automatically when Windows starts up.

3. Turn the Wi-Fi off

　[Case Windows10]:

　Go to Start Menu > Settings > Network & Internet > Turn Wi-Fi OFF

[Case Windows11]:

　Right-click the "Start Menu", then you will see the menu below.

　Settings > Network & Internet > Wi-Fi

　Turn the Wi-Fi off

4. Disconnect the Ethernet cable

　[Case Windows10]:

　Go to Start Menu > Settings > Network & Internet > As Ethernet does not appear, the connection is　disabled.

　[Case Windows11]:

　　Right-click the "Start Menu", then you will see the menu below.

　　Settings >　Network & Internet > Ethernet

　　check if you see “Not connected”.

5. Change Battery settings

　[Case Windows10]:

Taskbar > Click " Battery "

　" Battery settings " Panel opens　

　Move the slider to the right end and set to Best Performance.

　[Case Windows11]:

　　Right-click the "Start Menu", then you will see the menu below.

Settings > System > Power & battery > Power > Power mode

Choose “Best performance”.

6.Terminate “SysMain”

　[Case Windows10]:

　　Start menu > W > Windows Administrative Tools > Services

　　Choose “SysMain”.

　[Case Windows11]:

　　Start menu > All apps > W > Windows Tools > Services

　　Choose ”SysMain”.

　Open “Property”

Select “Disable” on Startup Type and click “OK”.

Then restart Windows.

7.Stop applications running in the background　

　[Case Windows10]:

　　Go to Start Menu > Settings > Privacy > Background apps, Turn “Let apps run in the background”

　　OFF.

Check Background processes

[Case Windows10]:

　Task Manager > Processes > View

Choose ”Group by type”.

Check Background processes.

[Case Windows11]:

Checking Background processes

　Task Manager > Processes > View

　Choose ”Group by type".

Check Background processes　

8. Stop the manufacturer's support tools

　[Case Windows10, Windows11]:

　 Right-click the "Start button", then you will see the menu below.

Open ”Computer Management > Services and Applications > Services”, select the PC manufacturer's assistant service, and stop the service.

rekordbox for Mac / Windows (ver. 7)

Articles

Troubleshooting audio noise in Windows

Workaround when macOS does not recognize your DJ equipment

When a streaming service does not show in a Tree view of rekordbox

rekordbox for Mac / Windows (ver. 7) FAQ