Slow download speeds over C4000
I have always had slow speeds and have replaced routers and cable modems for years. My neighbor right next door get consistant download speeds from his cell phone in my driveway of 950mbps. I bought the exact cable modem and router he has and also have the same internet package which is comcast 1200mbps. I run speed tests on hardwire windows laptops and see anything from 150-400mbps. I also see the same speeds on over WIFI on 5ghz. I have also had comcast out multiple times and they always say the speed is fine with their tool they use.
I have even taken my cable modem directly to the pole coming out of the ground and connected it there with extension cord to bypass the line from pole to the house and still get the same speeds. I manually set the QOS to 1200 down and 200 up but made no difference.
Does anyone have any suggestions? Thanks for any input.