R6700v3 UPnP/Teredo, Issues with NAT

My Nighthawk R6700v3 router has been having consistent issues connecting to multiplayer services, especially with a wired connection. On a daily basis each of my ethernet port lights will turn amber, and on an hourly basis I will lose network connection while playing on my Xbox. When I'm off wired connection my ping is between 400 and 1200ms. I've been consistently stuck to Strict NAT type. I've recently been getting messages of UPnP not successful and also prompts for xbox.com/xboxone/teredo. I have tried turning UPnP off and back on again and I have set up port forwarding to all 7 of Xbox's listed ports. I'm still dropping connection on nearly an hourly basis, and the lights for my ethernet ports will only last about an hour until they turn amber. Is this a hardware issue or is there some sort of setting I am missing? All of my firmware is updated to the latest settings and I have tried restarting my router numerous times.