The Exchange Server User Monitor (ExMon) RPC data indicates that the user '{3}' is causing high load on this server. FindRow ...

The Exchange Server User Monitor (ExMon) RPC data indicates that the user '{3}' is causing high load on this server. FindRow requests issued by this user account for {0}% of the RPC processor usage. This indicates the user has a large number of items in the folder that the FindRow is operated on. Consider reducing the number of items per folder.