ATT Fiber, upload speed faster than download speed

Good information, but what would explain that the upload is significantly faster than download on a consistent basis? With the different internet connections I have had, upload tends to be lower and only the best can match download and upload at high speeds.

Check the test on speedtest.net (Ookla) and fast.com (Netflix) in addition to any speed test AT&T has on their site. Good to have comparison including outside sources for transparency.

Thank you all for your kind insights. I've done speed tests everyday, at all hours on all my devices, all on, all off except the testing one, with different testing apps, with apps on the browser and standalone apps and I consistently get the same results.

If I remember my networking classes correctly, it makes no difference at transport level whether you're downloading or uploading so if you're capable of uploading at 800 MB you should be able to download at the same speed at the same point of time. The only time I've seen this difference is if you define a level of service or some other config so maybe AT&T inadvertently has some config limiting my download speed, hey AT&T, care to chime in ?

And usage experience is exactly the issue, I have an OLED TV which will definitely tell you the quality of your Internet connection, it makes a huge difference in image and sound quality whether you're downloading at 100MB or at 300 MB or at 600MB; the top speed of an Apple TV; so this thing is really bugging me though being a half-full glass sort of guy I'm happy when I hit 300MB but I won't stop until I get 600MB.

Thank you all and please keep posting your insights.

As you've been told, but have chosen to ignore, you can't get 600Mbps on a Wifi connection with the AT&T Gateway (exception being for the BGW320 that is just being introduced in select areas).

Im not using the ATT router for wifi, im using an Orbi for wifi.  Even when Im using the hardwired connection on my desktop, Im getting 200mb download with 950mb upload.  The difference seems extremely strange as to why this would occur.  

I'm having the exact same issue. Speed tests from multiple sources show 100mbps-150mbps download, but 400mbps-600mbps upload.

I *know* the issue began with the introduction of the AT&T equipment because I switched from cable to fiber very recently, and the cable is still connected. If I walk over to the cable modem and plug in the identical equipment, I get 250mbps download (the full advertised speed) using the identical speed tests. I can do this multiple times and get the same results, so I can be sure it's not my equipment or the servers.

I do have a second router connected to the gateway (the same one I was using with xfinity without issue), but I'm getting the same results from the ethernet ports and the wifi. That applies to the ethernet ports on the router (Nighthawk X6) and the gateway (BGW320-505) both. 

Saw another post from someone saying they forced their router to use a private IP. This is from 2 years ago, and obviously on different equipment (so I'm not sure how I'd reproduce the results), but seems like a clue: https://forums.att.com/conversations/att-fiber-account/upload-speed-faster-than-download-speed/5defc0d1bad5f2f606be3e55

Anyone have a clue how this might get fixed? I like having a decent upload speed, but it seems silly that I'm paying more for fiber and actually getting demonstrably slower downloads. I'd like to take a whack at fixing this before I throw in the towel and switch back to the cable.

Having the same problem here as well.  We had fiber internet 1000mbps installed yesterday, and we consistently get 300mbps download, 1000mbps upload.  This is hardwired -- NOT wifi.

We had the AT&T installation tech here during all tests and he couldn't figure it out.  He replaced the modem/router and made sure it was fully updated.  We swapped the networking cable three times.  He replaced whatever hardware connects to the end of the fiber a couple of times.  Nothing worked.  No other devices were connected besides the one doing the speed tests.

We tried three different systems (two brand new laptops and one desktop) and all had identical results.

The interesting thing is that the tech kept doing speed tests from AT&Ts side, and it was showing we were getting the full 1000mbps (I guess they ping our router and have it run a speed test from their side).  As far as he was concerned, he said the problem was on our end.  This doesn't make any sense since he literally just installed the fiber line to our house within that hour.  He admitted that it didn't make sense since the upload speed was hitting the 1000mbps target.

As a last resort, I set up the AT&T router to do a passthrough to our Netgear Nighthawk wireless router and have that router handle the connections.  The result is still the same.  300mbps down, 1000mbps up.

Speed tests were run on 5 different testing sites including Google's and Netflix's speed tests.  This has to be an issue on AT&Ts end.  This is a BRAND NEW fiber line!

@DeadTaco 

I would agree at this point something on your side of the Gateway is throttling the download. Be it QoS, a throttle setting in certain programs, or other interaction from your connected devices.

What exact devices are you using? What are their Ethernet port ratings? (usually 10/100 or 10/100/10000).

I've having the same problem. It can't be on the household end because AT&T's own app that's on my phone that checks the modem/router speed is showing the same issue. I've used multiple different speedtests that show the same. All my other devices are hardwired, my Roku and my work laptop so not using WiFi.