All communication between servers and clients are subject to fees.
Replication by the StrixReplicator components or movement synchronization by the StrixMovementSynchronizer components generate messages, and they are included in the amount of data for calculating the data overage fees. StrixMovementSynchronizer sends a message during the period of time specified through SyncPeriodMin and SyncPeriodMax, and the data for movement synchronization occupies the majority of data in a typical game.