I just purchased a SBG8300 and I have xfinity 1GB plan. I previously was using an sbg6950ac2. We are direct connecting via ethernet.
With the old modem, we were getting speeds of around 400 MBS using comcast speed test so we decided to upgrade. However, with the new modem we are only getting around 150MBS. We tried multiple devices and different cables. Interestingly I am getting around 350MBS using my galaxy phone using wifi…
Comcast of course says they are not the problem and that I should contact the manufacturer of the modem.
Any suggestions?