Comcast sends me a email and smail mail notification that I should upgrade my modem. "Sure I can do that!"
Several days on the phone and trying two DOCSIS 3.1 modems (Netgear CM1000 and a Arris SB8200) they couldn't get either to work consistantly.
Switched back to my old relieable Cisco DOCSIS 3.0 modem and everything is working fine again.
I read elswhere that I may need some type of amplifier installed?
I get speed tests of over 250mbps on the old modem. Not sure why they said I need an upgrade.
Just thought I would share!
I have the same issue as you. I have been paying for 1Gig speed for 2 months and the best I get is 267-290M with a Arris 8200 that Comcast suggested I buy 2 months ago. Even direct to PC from modem is the same. No wi-fi, 2 PC's wired direct with 1 Gig Nic Cards. They want me to use thier Modem to rent, will this fix my speed issue? The SB8200 is on thier approved list like they told me when I bought it.
Do I need a NASA type of computer to get the speed I have been paying for?