After searching this forum, Google and every instance in the manual where “Performance mode” is mentioned + trying every key-combination I can think of, I still can’t get out of Performance mode once entered.
Does anyone know how to escape without shutting down the whole thing?
Press any other page button, e.g. Osc 1
As simple as that 
Thank you.
That was driving me nuts too.
I am so glad that I am not the only one.
I was feeling a little - hmm, how shall I put it - about not figuring that out on my own
this happened to me too. thought i was going insane