The App is slow or not responding. How can I fix it?
Repeating certain actions on the Song Select screen may cause the App to slow down.
In this case, please attempt the following.
・ Play a song
Errors that occur in the Menu screen may disappear after you finish a song.
・Relaunch the App (quit the App from the App Switcher and then open it again)
If the App has become non-responsive, please quit and relaunch the App.
Please also try quitting other apps that are running in the background.
If the problem continues even after you have relaunched the App, please restart the device itself.
這個回答對您有所幫助嗎 ?