I forgot to mention that it's pretty ridiculous that a device with a 2.5 Gpbs uplink port has a 1 Gpbs QoS limit like this ... I hope someone from TP-Link sees this and logs a bug for it. :(

@paul1454 If you have QoS turned on, turn it off. I had it turned on and put in 1000 since that was the maximum, but it appears to limit the total bandwidth to that amount. I ran speedtest.net at the...