One of my hosts is regularly a number of seconds behind my other slaves?
The most likely culprit for this issue is that the time is different on the machine in question. If you have ntp or a similar network time tool installed on your machine, use it to update the current time across all the hosts within your deployment:
Once the command has been executed across all the hosts, trying sending a heartbeat on the master to slaves and checking the latency:
How do you change the replicator heap size after installation?
You can change the configuration by running the following command from the staging directory: