i had that problem also and as a drummer I'm pretty sure I could press the spacebar with above-average steady time. I was using firefox though, maybe that matters.
I too have musical education. using osx on m2pro, tried safari / chrome / firefox — nothing helped, the delay was maddening.
"was" — because indeed, blueetooth audio was the culprit. was using external speakers at the time I tried it first. now it's flawless and extremely enjoyable.
