
Select each device by clicking on the name so it becomes highlighted and then change the Buffer Size slider.

It is a good idea to set all devices you plan to use to the sameīuffer Size. You can adjust the buffer length for each selected device (in this case the Creative SB X-Fi is selected, highlighted dark-blue).

This feature allows you to use a USB microphone input and your regular audio device output at the same time (see point 7 below). Multiple audio devices: Unique to ASIO4ALL & FL Studio ASIO, you can select inputs and outputs from separate audio-devices, something that is not possible with standard ASIO drivers.Has a native ASIO driver then we recommend you use that.

Speed: ASIO drivers (in general) allow lower CPU overhead and lower buffer settings than the standard Windows ('Primary Sound Driver', WDM Driver).The FL Studio installation includes FL Studio ASIO and 3rd party ASIO driver ASIO4ALL.
