Frank Illenberger On the iP SE, yes, on the iP11 there is also a delay, but not so much, about 2 seconds. On the iP SE 2016 there is also a problem, if I wake up under load, after 5-10 seconds the microphone is functional, but the current tone (for example D5, it doesn't matter at all) does not pick it up. I have to play another one, in this case C#5 is enough and then everything is functional.
Edit: After the last update - I don't have a piano available now, but I played Pianoscope tones on the iP11 and had it tuned on the iP SE. The microphone (orange dot) now does not blink and picks up tones immediately. I'll see tomorrow at the piano, but so far the application looks fine.