I am getting about 1 - 2 MBs upload speed on a 12 MBs upload plan. Everthing has been replaced. Wiring in the house, modem and wiring coming into the house. Problem is Ookla reports 7 - 10 MBs which is wrong. But Xfinity will only accept thier speed test or Ookla. Testmy.net shows my true speed. Also I have done a upload bandwidth test to Twitch.tv servers with bad results as well. Something is wrong on Xfinity's end but they refuse to acknowledge or look into it further. Btw, download speeds are fine.
I can, but I'm pretty sure they will report the correct values. The tech that came out was looking at all those signals on his cellphone and said everything was normal. He was a knowledgeable tech. The supervisor is supposed to contact me so we will see. Interestingly enough, I found a post from someone at DSLreports that describes my exact same problem. Thier solution was a bad device hooked up to the network somewhere in the neighborhood. Going to show this to the supervisor when he comes out and see if it helps him. http://www.dslreports.com/forum/r31621255-Speed-Upload-Speed-Issues-Resolved-My-Experience
I'm having same issue as you and the forum. Please update if showing the tech that forum helps anything.
I'll let you know. Right now I am not confident that they are going to fix it. It's been 4 days and I have heard nothing from them. I should at the very least be directed to advanced tech support to see if they can identify the problem. They keep telling me to run tests from Speedtest.net which always come back good. But all other tests never go higher than 2MBs, I can't stream at all on Twitch.tv. I pay for premium internet and I am not getting it. I am also loosing revenue from my business. I've gone tough thier full standard troubleshooting playbook. All wiring to and in the house has been replaced. Tried 3 different modems. But because Speedtest.net shows good speeds everything is fine as far as they are concerned. I'm positive advanced tech support will identify the problem. But standard support doesn't recognize the problem therefore no connection to advanced tech support. Frustrating to say the least.
Well Tech came out today (after missing yesterday's appointment), guess what he found? Nothing. Which I already knew he would because the issue is not confined to my house or equipment. There is something wrong in the neighborhood. But they keep sending Techs out (knowledgeable Techs, not their fault at all) to verify the signals at my house are good.
Comcast has scheduled ANOTHER tech to come out again. They said 3 visits within 30 days will escalate it. Seems like a waste of my time and the tech's time, but I'll play along. I just want my internet fixed.
Well I tried exactly what the user from DSLreports posted. I upgraded to 250/25. Guess what? Upload speeds are half of what they should be. Just like the original post I linked said. So now will someone come out and fix this?
Tech came out, they finally acknowledged there is a problem. Said "They will look into it". Took 3 tech visits to acknowledge it and it's still not fixed. Customer service apologized again said it would take 72 hours to look into. I'm over the apologies and inconveniences, I identified this problem a week ago, no one would listen. I literally had to upgrade my service to get someone to recognize the problem. I spent money to troubleshoot a problem for their techs that I already identified. 72 hours? If someone would have escalated it when I asked a while back it would have been fixed by now. I've lost revenue due to not being able to stream, bought and replaced equipment I didn't need to and I upgraded to a service I didn't even need. 72 hours? Unacceptable.
What a joke of a company. They have scheduled Maintenance on the node for NEXT WEEK that MAY fix my problem. So let me get this right. If you have a problem, the fix is to perform Maintenance? Nope. You perform Maintenance to prevent problems, once there is a problem you fix it. Comcast logic is "Well, let's change the air filter and see if your oil light goes out". I'm done with this poor excuse for an ISP.