I'm running Firewalla Gold in Router mode. I have a TP-Link router (previously main router) that is configured in AP mode serving WiFi. Although the problem I am describing happens even if I remove the TP-Link from the configuration, leaving me with just the cable modem -> FWG -> locally connected workstation.
I have pingplotter ICMP plots running on the workstation (connected via ethernet to Firewalla) to both the Firewalla IP address and to resolver2.opendns.com (or any other internet address I have tried). Randomly (seemingly) throughout the day, connections in Teams, Zoom, my kids' games etc. will freeze. It happens on the locally attached PC too when that's the only device connected. Sometimes Teams gives me the "bad network quality" message (not always). Whenever Teams stutters or I get that message, Pingplotter shows up to 100% packet loss at exactly the same time. The pingplot to the FWG IP address directly is always stable though - doesn't look like FWG OS is having a problem.
I isolated this to simplest configuration (with just FWG and a PC), replaced ethernet cables with brand new CAT6, and this problem still occurs frequently. I can't get through a meeting on Teams or a phone call on WiFi calling without it freezing for a few seconds at a time, sometimes kicking me off the call. The pingplot is always consistent with 100% packet loss pinging the opendns.com. Same behavior pinging other sites including teams.microsoft.com and 220.127.116.11.
If I switch my TP-Link router back to router mode, remove FWG from network, and plug TP-Link back into cable modem, everything works as before with no packet loss.
I love the FWG, but this problem has been driving me nuts. Especially with the kids remote school work via Zoom, and Google Meets. It's nearly unusable.
I did try disabling Monitoring, Smart Queue, AD Block, Family. I didn't have DoH running or VPN client. I removed all the rules I'd been playing around with also. No difference in behavior.
Lastly, I should mention this, although I hope this isn't the cause because I LOVE IT, I'm running docker and have Homebridge and Pi-hole running. I'm also running the VPN Server. I have the thing running at about 49% busy and about 1.5GB free memory. Although, I did remove Pi-hole as part of my troubleshooting. I haven't tried removing Homebridge or stopping docker.
I'm hoping you can help because the FWG is awesome, but for the sake of kids' sanity, I have it currently removed. I have not tried re-introducing it in Simple or DHCP mode because I really want to run it as my router.
TP-Link is the C5400, by the way.
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