Thanks for the input @sekim … it really does help to have another perspective!
My overall situation is a rather complex rig with a lot of configuration possibilities. Currently overall latency is too high for comfort (close to 50ms typical). I have a lot of things I can tweak - breath reaction times on my wind synth (a bunch of settings there), SPDIF vs audio out of my hardware sound modules, serial vs USB MIDI, etc. Also general routing issues like do I run my looper in-line with my signal vs running it as a sidechain, and do I bring my sound module sounds back in to Cantabile for FX or daisy chain a hardware FX.
The latencies when looking at the audio traces all lined up are really easy to see. However I really do need to know when the MIDI appears and the MIDI visually moves all over the place. Don’t quite know why - Maybe Cantabile, maybe Jitter - but I gotta nail the MIDI event to be able to tell how to configure things to lower the latency in each segment of my rig and to make the other choices in a reasonably informed way …
I’ve posted my early work in the Latency Testing thread.
I’ll say that when I just plug my headphone into the wind synth directly - the sound is not great, but the immediacy is wonderful … as Matt Traum commented, “It’s like the sound is coming directly out of your mouth” (he was actually referring to a wind synth linked to an Analog modular synth controlled by CV).
Thanks again!