The upload speed on my Archer AXE300 is so slow, only registering at bet 3-7 mbps. I have a 1 Gig Up/Down fiber connection with Frontier and since this is not a Frontier provided router, they wont help me other than their basic troubleshooting. I have gone thru the common roots of issues, QoS, ALG, etc. I have reset the router to factory default, directly connected a pc to the ONT (and getting the right speed with direct connection) but as soon as I connect the router the upload speed drops down tp an abysmal speed. I'm using the 2.5 gb port for internet connection. I have tested pc's connected to either 1gb port or 10gb port with the same results. Any help is greatly appreciated.

Thanks.