Internet access from wired clients being throttled on SXR80

I have a SXR80 along with the satellite and I was previously had all of my wired devices plugged directly into the ethernet ports on the satellite. I had no problem getting my full broadband speed (1000 Mbps) with this setup. I recently swapped the router and the satellite so now those same devices are plugged directly into the router. They all now only get 120 Mbps. I've confirmed all of the devices are negotiating 1000 Mbps links and I've tested speeds between the devices and it all seems fine. But whenever I do a speed test accessing the internet it's slow. Devices on wifi are fine and running a speed test from the router in the dashboard is also fine. It seems to be something specific to internet access from these wired client connected to the router. I've tried connecting them one at a time to see if there's a misbehaving device, but I get the same results. It throttles right around 120 Mbps on every device (two Windows desktops and a Mac Pro). I've also tried factory resetting the router with no change.