Buffer length: Reduce to decrease the delay of the sound. Increase to fix crackling or stuttering sound. The number shown when dragging the slider is the number of 44-sample buffers to use.
Text on right: Total samples = ~Delay in milliseconds.
Default: 93 (x 44) = 4092 samples (~93 ms)
NOTE: Only affects the DSound and WinMM (not ASIO) drivers.