That’s really not about reliability. It’s about set up. It’s always wise to have a start up registration that sets the keyboard to what you want to avoid these issues. Then one button press sets the keyboard the way you like. I would see that as standard practice for someone doing gigs. Even as a home player these days I have that. I press power, then as soon as the keyboard boots up, I press my start up registration. Then no surprises.
Mike