The AD Replication Monitoring monitor has determined that replication is occurring successfully, but it is occurring more slowly than expected.
Either the replication topology design expects changes to replicate more slowly than the threshold for this alert or the replication topology needs to be redesigned.
Determine the expected worst-case, end-to-end replication latency for the entire forest. If necessary, adjust the script parameters to reflect this value.
If the threshold is set correctly, either something has failed in the replication path (other associated alerts identifying the problem will also have been generated) or the replication design as implemented in the configuration container will not achieve the desired replication speed and needs to be reconfigured.
Note: This alert directly affects how long password resets take to arrive at all domain controllers.