Getting output latency to <3ms

[ray314]

Hello, I'm trying to get <3ms latency in REAPER but it doesn't seem to go lower than that even if I reduce the buffer size further

512 samples

256 samples
suggestedLatencySeconds is 0.
I have disabled the inputs and the backend is WASAPI.

Is that because it couldn't calculate the estimate lower than 3ms, and would the actual latency be lower than that?

[dechamps]

I would assume that, past a certain point, reducing the ASIO buffer size would hit diminishing returns because the backend cannot go lower, and ends up having to do buffer adaptation between an exceedingly small ASIO buffer and the actual WASAPI buffer. In other words, at some point, all you're doing is reducing the size of the buffer between the application and FlexASIO, but the internal buffer used by the backend stays the same.

That's just a guess though. It could also be that the backend is reporting latency incorrectly. In order to figure out what's actually going on, one would have to thoroughly investigate actual latency and reported latency throughout the entire chain, which is tricky and time-consuming. See #153.

[ray314]

ASIO4ALL did get me lower however it was much more unstable, audio clipping and glitches.