Re - Player Metrics - Network Optimization blog - rejecht

In 3SPN Team ArenaMaster (TAM), the game tracks the location, health, shield, and location name of the players using a custom replication class.

As it turns out, this added replication is not necessary at all, since this information can be accessed client-side anyway, so now we've optimized away more network hogging traffic. Specifically, 3SPN TAM replicated the position of the pawns, as well as their health and shield strength.  The PRI was used for the location name.

Edit: Of course, further testing would reveal that this data is subject to actor relevancy, so location information is not sent for obscured players, for example.

Have a look at the HUD logic for the Invasion game type to learn the details.

A basic overview covering all of the replicated Pawn variables and some from Actor.