I think there must be one incoming rule filters "Unknown Number", "Contacts", "Outlook Category" or appointments related. When using those criteria, MagiCall will search in contacts, which will slow down the speed if there are many contacts.
2 outgoing call rules: Just change the outgoing number.
2 incoming call rules: incoming number starts with +65*, Appointment Busy status: Busy, send SMS to caller.
2 incoming SMS rules: incoming number starts with +65*, Appointment Busy status: Busy, send SMS to caller.
By the way, will the disabled rules delay the rings? If I put the date files in memory card, will that also delay the rings?