Titanium Backup stuck during backup
You need to create a filter to exclude the 2 WiFi Access Points.
In Titanium Backup, Goto Menu > Filters (under General) > Create Label (At the bottom right) > Add/Remove elements > Select all and then Uncheck the 2 WiFi Access Points at the bottom of list and Save (check mark at top right) 
Click Load/Save filter to save it as a filter
In scheduled backups, edit and select the Filter name and save