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Tutor

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10 Messages

Thu, Jan 31, 2019 6:25 PM

Why is my AT&T Fiber so slow

I have had ATT Fiber in my residence for 3 years and the entire time it has been very slow. Typical download speeds have been 2-3 Mbits pretty consistently, with sometimes the speeds going to 10-30 Mbits. Currently I have the 300 Mbit package. But this was the same when I had 50 Mbit and 100 Mbit. I am standing right next to the router, on a clear channel and I keep getting these bad results. Sometimes the upload result will be 40 or 50Mbits, despite the slow download. This is still well below rated speed, but it is faster for some reason. 

 

I have called support several times and sometimes they say there is a line problem, but the techs that come out don't seem to detect one. They have replaced my modem more than once and it hasn't solved the problem. Anecdotally it does seem worse on the 2.4Ghz band. But then again, there aren't *that* many networks around me even if there were I should be able to get more than 2-3Mbits download standing next to the router. These same devices get much faster speeds on other more congested networks at my office and school.

 

Is there something else I can do here to improve things? I have a PACE 5268 modem. I only have an iPhone and iPad connecting now, and a fooBot temperature/airquality monitor. Not a lot of demand on my network. 

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ATTHelp

Community Support

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133.9K Messages

2 years ago

Hey, @arosenbl.

Have you tried testing the connection via Ethernet, to see if it is a problem with the WiFi or the internet in general?

Keep in mind that the 2.4GHz and 5GHz channels will be providing different speeds. The 2.4GHz band is inherently slower and more congested, but provides a wider area for WiFi than the 5GHz will.

Also, check out some optimization tips we have available for our Gateways, and feel free to utilize our Troubleshoot & Resolve tool for personalized diagnostics.

John, AT&T Community Specialist

Still need help? Ask a question! Our 1.4 million members typically respond within 1 hour.

*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.

Tutor

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10 Messages

2 years ago

You might see some improvement by disabling IPv6 on the AT&T router.  Also a wired connection will avoid any wifi interference if you're unfortunate enough to be in a noisy wifi web with lots of neighbors hosting their own networks.

 

Overall however the service will never be as fast as your plan name would suggest since you have actually been allocated a portion of a shared channel with an upper rate matching your plan. The quoted plan speed is a hypothetical ideal if you were the only one using the channel.

Teacher

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5 Messages

a year ago

I have the 1000 plan and I rarely see more than 300Mbps on a wired connection. I could imagine ATT is faking it until they make it, which could be years. 

 

I was really excited to get fiber but now Im already annoyed by ATT for marketing promises they make and cannot keep.

Contributor

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1 Message

a year ago

Yes having the same issues 300 MBS Plan - devices dropping, slow internet speeds. I hate to have to go back to Spectrum. I am running 7 devices and it is barely hanging on to those. How many is everyone else running and or is that even an issue with the modem/router being weak?

Tutor

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10 Messages

a year ago

I never solved the issue. I don’t have this issue with cable internet connections I’ve tried in my same area. I’m not sure why, but they seem to perform more consistently especially with respect to latency. It’s the exact opposite of what I’d expect with Fiber vs DOCIS. I will say that ATT turns their router power up way too much and this causes interference problems in areas with a lot of ATT gateways. So it’s possible their wireless implementation could be improved. 

Contributor

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2 Messages

a year ago

@arosenbl, look at the back of your PACE 5268.  If you have a line connected to the green port labeled VDSL, then AT&T committed fraud on you (as they have been with many customers) and you have a form of DSL not Fiber to the Home. These DSL lines are sometimes called Fiber to the Neighborhood.  If nothing is plugged into that port and instead you have something plugged into the red port (between the voice port and the 4 LAN ports) then it's POSSIBLE you have fiber but not guaranteed.

 

[Per Guidelines:  Keep it Relevant and Appropriate]. I just called them and the representative told me I could only get 50mbps, but that it was Fiber to the Home and symmetrical.  All lies.  If it were FTTH, they'd offer faster speeds (at least 200mbps, if not 500 or 1000).

Tutor

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10 Messages

a year ago

It’s FTTH. I have a low voltage wiring cabinet with Fiber in it in my front closet.

New Member

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1 Message

3 months ago

Still having issues to this day. Im quite the tech savvy and run my pc straight from the modem, for the first month of service the internet was great as I was constantly getting 900mbs speeds and now im lucky if i see 4-500mbs. Have called and all they do is reset your modem 3 different ways, went as far as sending me a new modem saying it is the modem I have that is faulty but I have yet to test that theory. Still waiting for it to come in but I very highly doubt thats going to be the fix.

Roscoe1000

New Member

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18 Messages

2 months ago

I just got a new "1000Mbps" Fiber connection and it will only manage at best 155Mbps and that is wired, not wifi. Smacks of false advertising to me. Has anybody gotten even close to 1000Mbps or is it all just hype?

New Member

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2 Messages

2 months ago

I am having the same issues here. Just switch to ATT when I moved to a new house, tech installed 1000mbps. I have 6 devices on wifi and two wires in, and I have not pulled greater than 400mbps down on the wired. Oddly enough, I can get over 800mbps upload, unmarried speeds. After a week on the phones with tech support, they finally sent out a tech. His meter reads that I am getting 800-900mpbs to my modem, and out of my modem, but on his wireless iPad, he couldn't pull great than 200mbps down right next to the modem. He replaced the modem, same issue. He told me they might have a splitter issue at the neighborhood box, still no issue. 

 

He texted me a few days later to tell me that they are sorry, no idea why I'm seeing these numbers, and that was that. I'm getting less than my 400 Spectrum plan down, and ridiculously high uploads. All tech support wants to get me to do is to buy a Wifi extender, but I doubt that will change much on my wired network numbers.. 

 

Early adoption probz, huh folks! 

 

 

Roscoe1000

New Member

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18 Messages

2 months ago

I got this reply to a thread that I started on the same topic: https://forums.att.com/conversations/att-fiber-equipment/why-is-my-fiber-so-slow/5f303e51bd2550637aac67c4

 

My understanding is that the sheer amount of routing and peering that goes on for every 'net connection makes 1000Mbps only likely within the AT&T network, the rest is out of their control. (My connections are wired, not wifi)

 

"The speed test on your router shows the speeds within the AT&T network. The 970 Mbps down / 890 Mbps up are great numbers for a Fiber 1000 connection. Note that this is not the speed that you will get on your PC, Laptop or tablet.

 

Any tests to speedtest.net show the actual real world speeds that you might expect to see at any web site or internet service. This accounts for peering and internet routing to the various speed test hosting locations.

 

Also consider that each of the speed test servers are host 100's or 1000's of others on the internet running these useless speed tests."

New Member

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3 Messages

2 months ago

The reason the tech was able to read your speeds at a high rate, is that att and comcast you what is called speed burst tests. That registers a higher than actual speed test rating. A real speed test takes about 8-10 minutes and att and comcast are famous for this scam. 

Roscoe1000

New Member

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18 Messages

2 months ago

OK, I have been searching for ways to improve my speed and this site proved useful: https://keemanxp.com/blog/2010/8-useful-tips-on-how-to-speed-up-your-wired-broadband.html and in particular this item: 6. Tweak your internet speed using optimizer

 

Specifically I downloaded this (free) app: TCP Optimizer 4 from here - https://www.speedguide.net/downloads.php and ran it with the speed slider all the way to the right.

 

It took my SpeedTest.net average DL from 155Mbps to 930Mbps, so what ever it did it made a heck of a difference!

 

YMMV but it worked for me. (I have no affiliation with this app)

New Member

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2 Messages

2 months ago

Roscoe, I'll give this a shot. Seems kinda suspect that a third party app would be that big of a difference, but I believe you. Anything will help. Haha. Thanks for forwarding this along. 

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