I finally got back to doing more MIDI tests. Attached is a MIDI Monitor video using the ES 8. H90 is Ch 8, CC 3 is wet mix (initial set at 26), ES 8 Internal ramp from 26 to 0.

Maybe you can tell better than I can from this but it looks like either 4 clock cycles or 6 clock cycles for the H90 to be able to read a CC command.

Kevin