There's huge threads on DSLReports about the whole 2.5Gbps sync inconsistencies. Some people can sync the Bell SFP at 1Gbps and have no performance hit, other people (myself included) see reduced speeds. That's why I ended up buying an ES-16-XG to put the Bell SFP into (and in turn moved a bunch of my LAN to 10G).
On a more related question as I haven't run a Ubiquti router before. Can you use the WAN port as both the WAN and LAN where the WAN is on a separate VLAN? Or is it explicitly WAN goes to WAN and LAN goes to LAN.
I'm running my EdgeRouter 4 like this now, works perfectly fine. The UniFi line though isn't as "advanced" in that respect. I don't think the hardware has any limitations, it's the software. An interface is an interface, it should be able to be used for whatever you want. Since Bell allows multiple PPPoE sessions, I just have VLAN 35 & 36 tagged for the WAN side, then using VLAN 40 to run the Fibe TV PVR/STB on along with IGMP Proxy. (you'll see I only have eth2 on the ER4 connected below)
@JD do you have any downstream switches or are you testing plugged into the ES-16-XG?
Just read this thread:
community.ui.com
He says on his USW-PRO-48 that ports 1-24 perform much worse than on ports 25-48. My access points are on the 'first half' of the switch maybe that's why I see such a severe hit, and my desktops are hanging off a USW-FLEX being powered by the PoE++ ports that are on the 'second half'.
Sounds like maybe the USW-PRO has other issues? I guess he thinks its the UDM side, but that's pretty odd that only half his ports would be impacted. Sounds more like a switch issue to me.
Currently my desktop resides up on the Netgear switch, so it's UDM (DAC) > ES-16-XG (DAC) > Netgear > Desktop (10G copper)
My setup looks like this now:
Got UniFi Protect up and running now too, pretty straight forward. I plugged in the HDD and cleaned up the wiring, by the time I got to my PC it was all up and running and asked me if I wanted to add my camera (I had unmanaged them from UniFi Video beforehand).
Also hooked back up the Cable Modem, so dual WAN seems to be working properly now with the Cable connection as the Failover.
The new dashboard as part of the 6.x controller is pretty nice too for a quick glance (I had DPI and device detection off, thus why most things show as "others"):
90% happy with things now, just to sort out this LAN-WAN speed issue. And hopefully someday they'll allow multiple VLANs on the WAN side and IGMP Proxy support.