I recently updated to gigabit internet. I went from the 600Mbps package, using a SVG2482AC to a CM1150V. For some reason, the internet speeds hardwired are slower on the new plan. Support says the modem is provisioned correctly and they wouldn't be able to assist me any further since it is an owned modem. Does anyone have any insight? Speed test show 450 Mbps with uploads of 40 Mbps.
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I am having the exact same problem as you. Very frustrating. Many people on the web have this issue and in most, if not all cases, I am yet to see a resolution.
I'm sure you have, and I know I have, wasted countless hours on the phone only to get nowhere. I have been looking at AT&T's gigabit offering. They claim you can try it for 30 days and if you don't like it, get a full refund, but I am skeptical. I am doing my research and if people really are able to get a full refund within 30 days, I may go ahead and just have them come install it side by side with Comcast and if I see gig speeds, I'll be canceling my Comcast as quickly as their phone system will get me to an account rep.
Best of luck to you. Just know their are many others in your same situation and have been for 5+ months with no resolution in sight.
I may try the Arris T25, or just go back to the old package. Spending $250+ on a modem, and the end result is slower spends than what I previously had is ridiculous.
I logged into the modem and I see a large amount of uncorrectables which is the last number in bold
30 Locked QAM256 46 705000000 Hz -4.6 dBmV 37.1 dB 48641 117881