Extremely slow upload speeds

I am on the Extreme Pro Plan with Download speeds: up to 800 Mbps and Upload speeds: up to 20 Mbps

In practice, I am getting 800+ download speeds, and upload speeds on average in the 0.75-5 mbps range.

I had a Comcast tech out to my house yesterday who checked the line and reported the line is fine. He used a device to test both the RF as well as Ethernet throughput:

1) On RF, bypassing the modem,, the meter showed over 1.2GB down and 35MB up

2) On Ethernet, with the modem in circuit, the meter showed nearly 1GB down and completely erratic speeds up between 4 and 12MBPS. It never ever got to 20.

Those speeds were reported on his device

.

He swapped out my customer owned modem to a rented Comcast xFi gateway to eliminate the possibility that it is my modem.

My own customer owned modem that he swapped out is a Netgear CM1150V which is on the approved Gigabit list.

Even after his visit, on every speed test, even after his visit, I am getting around 1-5 MBPS (both hardwired and wireless). My zoom calls are dropping multiple times a day and I have to turn off video to keep going when this happens.

My neighbor across town also on xFinity gets 20+ upload on his speed test consistently. Something is wrong and I need help getting this addressed as I am not getting what I am paying for.

Responses

user_RobertB

Contributor

•

350 Messages

4 years ago

Hi there! I'd be glad to ensure that this gets looked into further and get your internet speed working as it should. Please send a private message with your name, the complete service address (including city, state, ZIP, suite number, etc), and the phone or account number, and any pertinent details-- like the ticket number(s)-- so we can help. You can do this by clicking on the icon in the upper right corner of your screen and send a message to the shared handle "Xfinity Support"

2

U

user_3adb90

Visitor

•

2 Messages

@XfinityRobertB

Hi Robert,

Same problem. All of a sudden, about 3 days ago, my upload speed slowed down from ~35MB/sec to 10MB/sec. It's consistently low--which suggests that it's being throttled by Xfinity. How can I get the upload speed I'm used to?

(REMOVED PERSONAL INFORMATION)

(edited)

3 years ago

0

XfinityAirelle

Official Employee

•

2.5K Messages

Hi there! We have removed the personal information you included in your comments. You should NEVER post your personal information on public forums or websites.

We would be happy to assist you. Can you initiate a chat and start with your full name and address? To start a chat, please click the chat icon in the top right of the page next to the bell, and send your message to "Xfinity Support". Talk to you there!

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer. tick

3 years ago

0

U

user_3adb90

Visitor

•

2 Messages

3 years ago

Hi everyone,

Same problem. All of a sudden, about 3 days ago, my upload speed slowed down from ~35MB/sec to 10MB/sec. It's consistently low--which suggests that it's being throttled by Xfinity. How can I get the upload speed I'm used to?

(REMOVED PERSONAL INFORMATION)

(edited)

0

MadDog24

New Poster

•

5 Messages

3 years ago

Same here my upload speed is consistently 2.5mb and under.

0

user_83ecef

Visitor

•

1 Message

3 years ago

Plan speed 100/5 Mbps.
Real upload speed 0.7 Mbps.

I very rarely need to upload large files to cloud storage, but today I need to upload a file from our 25th wedding anniversary video. Our friends and relatives are waiting for the video file to load.
I am very sad. I am sure that the problem is not in the computer, because the same computer was also connected by cable to a router in Russia, and the same application for working with Yandex.Disk cloud storage perfectly uploaded the video file at a speed of 9.5, Mbps, and not 0, 7 Mbps!!!!
It's just disgusting! When moving to another house, Xfinity will be the last one I choose to connect to the Internet!

1

0

CCLuis

Problem Solver

•

493 Messages

Hi, @user_83ecef. Please don't be sad, we are here to help! It would be our pleasure to look into this issue with your upload speeds. We will do all we can to this fixed as soon as possible so that your loved ones can enjoy your wedding anniversary video. By the way, congratulations on hitting such a beautiful milestone! Please send our team a direct message with your full name and full address so that we can assist you further.

To send a "Peer to peer" ("Private") message:
Click "Sign In" if necessary
• Click the "Peer to peer chat" icon
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
• Type your message in the text area near the bottom of the window
• Press Enter to send it

I no longer work for Comcast

3 years ago

0

V

vinF

Visitor

•

2 Messages

3 years ago

Same thing happens to me. I'm on gigabit with comcast 1gig down / 40mbps up (which is a joke in itself). My upload drops to ~0.5 MBPS randomly, and I get kicked off of work/school video calls because of it. This has been happening to me on and off with comcast for years. They have yet to completely fix the issue. I'm currently getting the issue again right now (hence me being on this forum looking for answers). Made my own post about it as well. Only thing I can think of at this point is switching ISPs. I'm at my wits end at this point. Seeing that there's this many people with the issue other than me just goes to show that it is definitely an issue on Comcast's end and not the customers. I'm beginning to think they just throw a upload speed throttle at people randomly hoping they won't notice.

(edited)

0

C

chenjiahui93

Visitor

•

1 Message

3 years ago

Hi same situation here, I am on the Extreme Pro Plan with Download speeds: up to 800 Mbps and Upload speeds: up to 20 Mbps

Actually my downloading is 600+ which is fine thought never exceeds 700, but uploading speed always around 1-5 Mbps which extremely give me trouble since working from home and having video calls.

1

0

CCChe

Official Employee

•

6.9K Messages

Hi @chenjiahui93! Thank you for sharing your experience here on the Xfinity Community Forums. As someone who also works from home and utilize video conferences for team meetings etc. I understand the importance of having a reliable connection with the speeds I need. I'd be happy to review your account and check your signal levels and the health of your node to see if I can isolate a cause for your speed issues.

Can you send a direct message with your first and last name and service address? To send a direct message click the "Direct Messaging" chat icon in the top right corner of the page, then click on the pen and pad icon and enter "Xfinity Support" in the "To" section of the chat.

I no longer work for Comcast.

3 years ago

0

Customer Service

anonymouse2

Extremely slow upload speeds

user_RobertB

user_3adb90

XfinityAirelle

user_3adb90

MadDog24

user_83ecef

CCLuis

vinF

chenjiahui93

CCChe

New to the Community?