StopSync avoid lag caused by background sync communication and screen blockage caused by notification display while running applications needed high response characteristics(example game apps).

It will stop synchronization and will discard notifications only when the registration application is running. It will automatically restart synchronization and notifications when an app outside the registration is running.
Synchronization notifications will not be lost when stopped. It is not possible to restore the discarded notifications. (Considering adding this feature.)
Some system synchronization and notification displays cannot be stopped.
Please access permission by the user is required only the first time the application is used.