Hi Rick - yes, it's happening on everything. Also, as of today, it starts immediately after switch on and not after 45 minutes!! I was thinking it could be something to do with Modulation wheel?? It's a definite vibrato/shimmer on the whole instrument - very strange. I am going to try a factory reset tomorrow.
Edinburgh is beautiful - my spiritual home. I play church and theatre organ. I have installed a huge Hauptwerk Paramount theatre organ in my church along with the pipe organ. Still sorting out the wiring and 16 speaker channels.
Many thanks for offering advice with the Tyros2.
All best
Charlie