I agree. @C0d3man takes their time helpping everyone that need it. Thanks for your unvaluable help.
@jofemodo I think you're focused in writing code, so I prefectly understand your short answers.
I'm trying different setup as @C0d3man suggested but latency is still there. These are my sound interface features:
24-bit/96kHz audio interface with dual mic/instrument preamps
balanced/unbalanced analog I/O
S/PDIF coaxial; MIDI I/O
¼” headphone output with level control and A/B source switch
In the past I was using this interface in a windows environment. It was hard to achieve a reasonable low latency. I think is not worth a deeper research to make it work with Zynthian.