[Zubersoft]

It seems to me that might be overly complex. The setting for performance mode is persisted if you close and restart the app. So if you have it enabled when you stop using MobileSheets, it will be enabled when you start it up next. So you really just need to develop a habit of enabling the setting then. You can toggle performance mode on both using the toolbar on the library screen and the quick action box by tapping the bottom right corner when a song is loaded. If enough users really want me to support having it automatically turn on when the app is loaded, or some other conditions, I'm willing to consider that after a discussion about the exact requirements and options.

Mike