![]() During that time, running a test shows that there still is a ~15-18Mbps download bandwidth capability. The download starts out at a reasonable speed (~2MB per second). This is most certainly a problem with the AT&T service. ![]() I am dismayed that you would respond in this manner without comprehending the situation. AT&T should not be in the business of throttling my connection. These are legal files I was downloading for legitimate purposes. It wasn't that I was getting some great download speed on the file, and somehow the remaining bandwidth was "eaten up." Literally, my entire connection went down to <1Mbps. And along with that, speed tests (both AT&T and ) showed speeds of <1Mbps. The download speed of the file itself went down to <200Kbps. You might say, "Well, the problem was that your download was eating up all the bandwidth, so the rest of your connection was slower." But that's not true. No filesharing apps are even installed on the one machine that was connected to the network. I was using a web browser to download a single file. You might say, "Well, the dropbox app and other filesharing apps use up a lot of bandwidth." But I wasn't using the dropbox app. The AT&T network is simply rigged so that users cannot download large files directly. We tested this multiple times, and it is 100% reproducible. But then, if I stop the browser-based download, within minutes my broadband WAN connection speed goes right back up to ~18Mbps. At one point, my broadband connection actually went down (the broadband light on the modem went red and I got an error showing "Broadband connection not available"). If I tried to visit other sites, the connection was terrible. The download would suddenly become impossible (appearing to require 10+ hours to complete). Within a minute of initiating the download, my overall broadband WAN connection speed would throttle down to <1Mbps. Then, I would attempt to download a large file from. I could visit sites, watch videos, run, etc. ![]() The speeds were fine, in-line with the plan I have. How did we deduce this? David created a new network SSID on my router and had me only connect one device to it (so that no other devices would interfere with the test). Here's what we finally deduced: Attempting to download a large (2GB) file via a web browser from results in my broadband WAN internet connection being throttled down to less than 1Mbps (with an effective download rate of <200Kbps.) A few minutes after the download is cancelled, the broadband WAN speed goes back up to normal. I spent about an hour tonight troubleshooting an issue with AT&T technician David who works via phone from Wisconsin. I have a Pace 5268AC router connected via the 18Mbps plan.
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