You should ping a game server IP address and try to use IPv4 pings.
Also worth noting that if packet loss doesnt appear on the destination hop it doesn't really affect anything.
Try and get a game server ping, and enable "Max" ping spike in the top table by right clicking the table. It makes things easier to see.
Also do a test with absolutly nothing else using the network, turn WiFi off on the HUB etc and use Ethernet cable into the HUB when testing.
If you have one I’ll give it a bash.
I only use ipv4, and I’m not using the old BT stuff, can’t stand isp supplied stuff as it’s never great so can control everything to a fine tune or what I wish to have access.
At some point I will rig up the XR500 and give it another bash.