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I wonder who at Cox thinks that Gigablast speeds are 140Mbps/35Mbps? Because that's been the experience I've had over the past several months. If I wanted the level of service I'm getting, I would have signed up for Verizon...Oops, I can't since Cox has agreements with the city preventing any competition. I've talked with support on the phone and via web chat. The only thing they want to do is a reboot of the modem, and then claim that they don't see any issue. Only when pressed on, do they mention having a technician come out to look at the issue, at $75 for them to come out.
I thought it would be the panoramic gateway, but since I have voice service, I can't replace the gateway with my own equipment, not like Cox would allow that either. I have a brand new CM1200-100NAS that Cox has stated is supported, but every time I have attempted to activate the modem, I'm told that it's been registered to another account. They can't explain how it's been registered as I purchased it at Best Buy, and have had to exchange it 3 different times because of the same "it's been registered to another account" issue.
On the speed part are you using the wifi or direct connection, because I know that when using the wifi that the speed drops dramatically, so we use the ethernet cable for the most important devices, so I was just curious.