Visitor
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3 Messages
Internet speed of ~30Mbps is 20x slower than my plan speed of 600Mbps!
My Internet speed has been consistently slow for the last few days at ~30Mbps. This is 20x slower than my plan speed of 600Mbps! I have restarted my modem, and that did not resolve this either.
user_fd4a54
Visitor
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1 Message
3 years ago
Literally having the same issue. They sent a new router and that didn't fix it. Now they're having me go to the store for the "highspeed" router. Give me a break. Wasted a month of my time.
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CCAaron1
Problem Solver
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954 Messages
3 years ago
Hello @user_851a04. I am very sorry to hear that you are having these slow speeds and I would love to assist you! It has been a couple of days, since you reached out. If you are still having issues, we will want to get your account pulled up and start getting this resolved. If that is the case, please send me a direct message with your first and last name, along with your complete service address to “Xfinity Support”. To do so, click on the chat icon located at the top right of this forums page.
Here are detailed steps to direct message us:
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santatollimus
Contributor
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46 Messages
3 years ago
Hey there! I am not an official support but I am happy to help troubleshoot!
I know exactly what it feels like to ask for support only to be met with a sales pitch!
I even know what happens after you succumb to said sales pitch and buy the gigabit plan.
Background:
I have the same issues and I've done extensive troubleshooting which I'm happy to share.
I rented two xb3 modems, 1 xb6 modem, and 1 xb7 modem (xb7 being the latest new model)
None of these modems resolved my issues! In fact I get more speed on my Docis 3.0 than I do
on Xfinity's Docis 3.1 Xb7!
So what gives right?! Why would they constantly try to sell us these terrible pieces of hardware / software?!
I'll tell you what I think and official support can correct me if I'm wrong.
When you use an xfinity certified modem Xfinity sees all devices that use internet from that modem.
So if you have 20 devices on the network Xfinity's tries to automatically allocate bandwidth to each device.
So if you're paying for 900 down with 30 up. that is being divided among the 20 devices in your home.
But maybe your tv your your alexa your google puck your smart watch your cameras etc
maybe they don't need the same amount of bandwidth as your main device does?
how do you ensure you get all of your speed to your main device without disconnecting 19 other machines!?
Normally
You put your modem in bridge mode.
You connect your modem to a router.
You hide your routers MAC address.
If you do not hide your routers mac address
Xfinity sees your routers model and outright denies your DHCP request
or severely throttles your speeds during your recorded peak usage hours.
I personally think it's a huge step to have to spoof your routers MAC address
just to get the internet you're paying for at the speed you are promised.
I have also noticed even when you do get your desired speed out of your
equipment Xfinity will throttle your connection until you spoof your routers MAC again
which makes Xfinity hand you a new IP. On this new IP generally I get 2-3 days of good
internet before the horrendous throttling begins to attack again.
This means to use your service every time before you start
you have to reactivate your modem and make your router's MAC address look like a PC
if you want to use more than one device on your home network.
o/ If you want more help feel free to post I will be checking in periodically to see if anyone
knowledgeable from Xfinity has posted.
I should also note even this method is not foolproof as eventually after 5 activations DHCP takes a 7 day break from handing your
existing equipment new IP addresses. For this reason I keep 3 cable modems in my home. I swap a lot. I do not like talking to support every day.
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I'm not official Xfinity support but they can't or won't help me either so
I'm offering support to all other cases hoping someone looks at mine.
https://forums.xfinity.com/conversations/your-home-network/upload-drops-02000-kbps-unstable/6220b1aaaef5c36d133d6334
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user_851a04
Visitor
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3 Messages
3 years ago
My speed at the modem is all over the place now. I have twice measured speeds >600Mbps but then it drops to 30-40Mbs in a few mins!
ive started a direct message with Xfinity Support and will keep you all posted if they can help
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user_76767c
Visitor
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2 Messages
3 years ago
I have been receiving "check your internet connection" notices since 3/2.....all xfinity says is "restart your modem".....NOTHING HELPS
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user_44512c
Visitor
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1 Message
2 years ago
I have also tested my internet speed many times and worked with Xfinity tech support to improve my internet performance. Nothing has made a difference. Basically, I am supposed to have 300Mbps service yet the highest speed I have ever seen in a test is 160Mbps. Generally, the readings are in the 145Mbps area on average. I do not understand how Xfinity gets away with advertising significantly higher speeds than they are actually delivering. [Edited: "Soliciting"]
(edited)
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