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Troubleshooting audio noise in Windows

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 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.

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2. Turn off applications on Windows start up

 [Case Windows10]:

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

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 [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

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[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.

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 [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 "

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 " Battery settings " Panel opens 

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

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 [Case Windows11]:

  On “Start Menu”, click the right button of the mouse, you will see the menu below.

  Settings > Power & battery >

  Choose “Best performance”.

 

6.Terminate “SysMain”

 [Case Windows10]:

  Start menu > W > Windows Administrative > 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

[Case Windows11]:

  Checking background processes

  Taskbar > Task Manager

  Task Manager > Processes

 

8. Stop the manufacturer's support tools

 [Case Windows10, Windows11]:

   Right-click the "System Menu", 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.

 

 

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