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Time Warner Cable - Bandwidth Throttling to video streaming websites

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Published on Mar 27, 2013

*UPDATE*
This issue has not been recurring lately, and I have noticed that the problem only occurs during peak usage times. That makes me thing that I am experiencing slowdown due to shared bandwidth(cable has shared bandwidth among users). Although, I still can't explain how the lag goes away after using VPN.

I am a Time Warner Cable internet customer in central Texas. I have the 30mb/5mb

Observe my laggy stream to twitch.tv on my Time Warner Cable connection. During the afternoon, I have laggy streams. Very late at night, they are fine.

This video shows me connecting to a VPN service, and have completely normal streams. When I disconnect the VPN, the stream lags again. Speed tests while connected to VPN and while disconnected both show normal speeds of 30mb down and 5mb up.

I also use the tool glasnosk to do some tests.
http://broadband.mpi-sws.org/transpar...

This tool can test if your ISP is throttling various traffic types including Bittorrent, Flash video, and HTTP traffic. During the afternoon, the test only gets 1mb for Flash video. At 1am, the same test gets 25mb.

Here are links to images of my glasnost testing. The test was for streaming video. It was run at 1:30am on 3/27/2013. Notice, I'm getting from 14-28mbps. Streams on twitch.tv are not laggy at all.
http://imgur.com/biFIPHv

Here is the same test at 5:00pm 3/27/2013. Notice I onlt get 1.6-1.7 mbps. Normal speed tests are normal. But streams on twitch.tv are lagging like crazy.
http://imgur.com/dPMERkV

It is pretty clear that Time Warner Cable is throttling my traffic to streaming sites, starting at around 5:00pm central. Level 3 tech support has no idea what I'm talking about. I am speaking to a supervisor tomorrow.

Any other Time Warner Cable customers inspired to do some testing of their own?

Reddit post:
http://www.reddit.com/r/technology/co...

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