I am trying to determine why I have a small but noticeable delay when using my Roland FP-10 as a midi keyboard controller. I connect the FP-10 with a USB cable to my M1 MacBook Pro running a DAW (Reaper) using a virtual instrument (doesn't matter which one, but for specificity the free Soft Piano from Spitfire audio LABS). I turn the volume on the FP-10 up a little so I can hear it play through its own speakers as well as through the MacBook speakers. There's a slight but audible delay between the two. A guess at the value is 10 milliseconds (a non-negligible fraction of a sixteenth note at Allegro tempo).
When I have a cheap Keith McMillan K-Board hooked up with same computer and software, no delay. Points to the FP-10 and not my computer or s/w.
It's as if the midi from the Fp-10 has some built-in delay.
I'd love to keep the FP-10, I like it as a standalone digital piano. But I need a decent keyboard for a midi controller, I thought this could do the job.