What part of the LAN bridge documentation is not working for you?
Here is my simple network topology.Still looking for help.My ISP doesn't use IPv6 wondering if enabling this would improve the network for my Xbox at least on the LAN side?
To keep things simple - if you want to use more than one port of your device for LAN clients - you should definitely build a LAN bridge following the OPNsense documentation. Anything else would require to create multiple interfaces, multiple DHCP pools, firewall rules for everything, dealing with multicast ... not quite fun.What part of the LAN bridge documentation is not working for you?
If you have unconnected ports in that bridge you will have output errors. This is not a problem.
Eventually I have a feeling you will end up buying a 2.5gbps switch, looks like you can get a 5 port that includes a 10gbps uplink for around $44usd. No idea if these cheap switches will really perform, but https://www.servethehome.com/ has a bunch of reviews on some "cheap" 2.5 and 10gbps switches that might be worth looking at.Summary is that I think you are going to get tired of fooling around trying to bridge those ports and get full speed out of them. Maybe it works, maybe it doesn't, but a switch is going to be a lot easier down the road.