Asus AC5300 on Xfinity gigabit network

[PaperFriend]

I just recently upgraded my internet from Extreme 250 to the gigabit network with xfinity. Problem is my upload speed increased but my download speed did not. If I plug my MacBook directly into my Netgear cm1000 I get download speeds in the 700's but I am getting around 200 through my router. I am running the most current Asus firmware. Comcast tech support said it was a router issue and recommended I switch to a Netgear Nighthawk router. I find it hard to believe that the 5300 can't handle the speed. Any advice?

 

[doczenith1]

Even without NAT acceleration you should be getting faster speeds than that. My 68U can do 380 without NAT acceleration. I would probably start with a reset to defaults and then minimally configure the router and see what kind of speeds you see. What kind of cpu usage are you seeing during the speed test?