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Forum Discussion
C6300 AC1750 can't handle 300Mbps
We have WOW internet service. We currently have 110Mbps service. Everything is working good. When we upgraded to 300Mbps the modem would not accept that speed. The WOW customer service agent said t...
Same problem in a way . . . . Had our Ultra (300/26) service working fine on an Arris TW router/modem. Upgraded to the Netgear AC C6300 1750 combo and it connected up fine after I called TW and gave them the MAC address . . . . After reconnecting everything just like before, the wireless connections achieved the service speed, but all my wired connections came back at 22 / 11 or similar. Called the GURUAID support number that SEEMED to be connected to the Netgear support site, asked them if they worked for NETGEAR and the said "Yes of Course" and then proceeded to tell me that I needed "Premium Support" for extra money to properly setup the modem, and after I yelled and screamed a bit, did give me the "clue" that the Router choked bandwidth from the wired connections to enable a greater WIFI signal, perhaps with the MIMO settings etc, but refused to give me any other clue as to how to configure the router. I configured the WIRELESS settings in the router menu to 25% power and lower speeds, and then reset the modem router and that seemed to increase the speed a bit but not anywhere near where it should be. (28/18) instead of the (358/26) I was getting on my WIFI connected cell phone or the previously wired connection with the ARRIS TW router/modem. I have gone through a couple complete restarts of the C6300, and now just getting (19/19mbps) with the wired connection. A bit of a mystery with an allegedly state of the art Router/Modem . . . .
Netgear Support helped me by changing the WIRELESS channels to 9 and 161 respectively for 2G and 5G, and setting the MTU in WAN settings to 1478 and the CTS/RTS Settings in the LAN to 2305 from the default . . . . This appeared to speed up the connection in a subsequent test for my wired computer, to about half of my provided ISP speed (120/18) for (300/26) which was much better than the previous test, but still somewhat reduced. I asked the technician about why this helped, and she said something relatively unintelligible about packets and channel collisions, but I decided not to pursue it since it seemed to work. Subsequently my speed seemed to get back a bit lower, but still seems workable.