-SR parameter allows to use the default sample rate given by the ASIO driver or to forcethe sample rate defined by the preferred sample rate.It is also possible to open the ASIO Control panel of the main output device by clicking on itsname.Getting Optimal Latency:The choice of the Output A1 is critical to get the best global latency, since it gives the mastersample rate and main buffer size. So we recommend to select your best audio device as outputA1 (preferred ASIO if possible, WDM or KS otherwise) – with ASIO device the buffer size isgiven by the ASIO driver itself (that can usually be set by the ASIO Specific Control Panel ofyour audio board). But it is possible to specify a preferred ASIO buffer size (used if the driveraccepts it).To improve latency, you can also decrease the latency buffer size (for example down to 256)especially with WDM or KS devices. If using WDM devices, you can again reduce global latency(the time between microphone and speaker) by using SWIFT mode (but not recommendedbecause might be unstable).Activating WDM Input Exclusive mode (and Swift mode) will force audio engine to use smallestbuffer with WDM input devices. But this exclusive mode could not be stable and producevarious potential problems in the time (from audio crash to system freeze/crash – pending onaudio driver and O/S – see known issues section at the end of this document).Virtual I/O latency can also be optimized by decreasing the Internal Latency of the VoicemeeterVAIO driver by using specific VBCABLE Control Panel program. However decreasing internallatency can produce discontinued or non-working stream in some cases, pending on differentbuffering constraints (see VB-CABLE technical documentation).Virtual ASIO driver are adding a single buffer to the global latency (the size of this buffer is givenby the buffering of the output A1)LATENCY WARNING:CHANGING DEFAULT LATENCY, BY REDUCING BUFFER SIZE CAN DECAY THE AUDIOSTREAM, BRING UNSTABILITY, FREQUENT AUDIO CUT, STATIC, SYNCHRO LOST(ROBOTIC VOICE).If you get such problem, come back to default buffer size.
