5.5ms / 128 Buffer @48kHz is about what you can expect from a modern class compliant USB audio device. So your audio device is working fine and any latency problems are not related to it. Going to lower buffers (64 or 32 if available), to shave 1-2ms off, is not worth the CPU hit if the main use case is for virtual instruments. Switching to a PCIe / Thunderbolt device will, likewise, not gain much - though certain drivers (like RME) might perform better under heavy CPU load on Windows (On Mac it doesn’t matter the same).vignesh.vijay wrote: Wed Dec 17, 2025 6:58 pmThe bigger question. I have latency problems at 256 buffer size. The latency on VST instruments- Is that from my audio interface or is it my computer? Or is it because of the midi-usb cable i use?
If you’re experiencing significant latency then the source is likely to be the plugin chain. I remember you asking about this before. Many plugins are far from zero latency, and (generally) you cannot chain a bunch of FX and expect there not to be a noticeable delay if you aren’t making sure those effects are zero latency.
MIDI input issues (whether direct or via USB) are usually more about jitter and event timestamps (AKA Why does what I record sound worse, timing wise, than what I actually played) For Cubase, ASIO Guard will also add latency to any non-record enabled tracks, in order to attempt to better balance CPU usage. Mostly you want this enabled.
