Pioneer DDJ-SR2 Operating Instructions Manual page 27

Adjusting the buffer size (when ASIO is
used)
This function can only be used by those using a Windows operating
system.
If an application using this unit as the default audio device (DJ software,
etc.) is running, quit that application before adjusting the buffer size.
Display the setting utility before starting.
Click the [ASIO] tab.
! If the buffer size is made large, drops in audio data (breaks in the
sound) occur less easily, but the time lag due to the delay in the
transfer of the audio data (latency) increases.
Checking the version of the driver
software
Display the setting utility before starting.
Click the [About] tab.
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