How to Optimize latency in Voicemeeter

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Vincent Burel
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How to Optimize latency in Voicemeeter

Postby Vincent Burel » Mon Oct 09, 2017 9:09 am

Voicemeeter latency is pending on different parameters and the overall configuration of your PC. Since this optimal settings is not applicable to all PC Setup, you may have to experiment to find an optimal configuration with the best compromise between latency and audio stream stability.

FIRST Point to optimize latency in Voicemeeter is to select your best audio device as output A1 (giving the main audio stream). optimal latency is usually made by selecting an ASIO driver configured with a buffer size around 256 samples. if no ASIO Driver present, WDM/KS device can be used instead. Some of them could work with 256 sample buffer (but some not).

This video shows how to get smallest live latency (MIC -> Voicemeeter -> Speaker).
https://youtu.be/LAYKcIC5iFY
We remind that WDM-Exclusive mode is usually not stable in the time (due to bug in WASAPI it can generate crash or BSOD within a 48h session) and SWIFT Engine mode is experimental. In case of problem, we recommend to go back to default settings.

Finally, Virtual Audio I/O Latency is pending on specific internal buffer and also on Voicemeeter Main Stream Latency (output A1 device). For Voicemeeter VAIO, we recommend to keep internal buffer size around 4096 to 7168 samples. Reducing latency here is for expert and cannot be done without having read this technical note:
https://www.vb-audio.com/Cable/VBCABLE_SystemSettings.pdf

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