I agree that this is really confusing. I think that if the Master Server only can talk to Relays and NOT clients but all relays can talk to Clients over the internet or REALLY slow WAN connection then enable same TTL on those devices. As long as the Relays can establish communications quickly to the master then the default 5 second timeout should not matter as they will establish connection within 5 seconds. The good thing is you can test and always jump the master TTL to 30 should this not prove to be the case. That what I would do anyway. You may wish to run up the support flag pole for confirmation…
Thank you Steve,
I put client and relays with '20', and master with '5' seconds. I test a few days.
Since this modification, rules take longer to be associated, even on fast connections.