said by Vince:It could still be an issue that only impacts DOCSIS 3.0 modems. Therefore you really need to see if they will give you a DOCIS 3.0 modem to test with. Anything else isn't comparing apples to apples.
I stopped and picked up a modem from TWC today. They gave me a Ubee u10c018.80. I just got it hooked up and even though the DL speeds seem slightly lower(could just be a lot of traffic right now), the UL speed seems much better and more consistent. Now my question is: Is my Zoom modem definitely bad or could it still be an issue with the upstream connections? The Ubee is only DOCSIS 2.0 while the Zoom is 3.0.