All Remote Clients share network functions with the server including auto-DCU save.
I/NET site with Filemaster and Remote Clients
Not only is the network configuration saved in the SQL database, but also the network functions. That means the server and ALL remote clients will check every controller on every link in the system and save any that have changed beginning at 3:15 AM everyday. If you have many hosts and many controllers, it could create quite a bit of network traffic.
You might consider turning on auto-save on Fridays or once a month or some other strategic interval.