«

»

Jan 02 2014

Can’t watch Netflix! Comcast disrupting connection?

There are many online content providers, from Google Play to Amazon Prime. However, the one with the best content selection for the price is still Netflix. Netflix is an amazing service, especially considering the price. Unfortunately I can only fully utilize this service if my internet connection can support it. Now ideally, I pay my Internet Service Provider for Internet access; unrestricted Internet access. And it isn’t anything Cheap. I can get Netflix for just $8 bucks a month, but I have to give up over $50 a month just for a measly 8Mbps connection. Doesn’t seem fair, but hey, that’s my only option. The great monopoly that is Comcast is the only cable Internet provider in my area… I pay then handsomely for Internet access, yet at times it would appear that they are failing to do even that. Recently I have been having a very hard time streaming content from Netflix, and I’m not alone.

The Problem

So here’s the deal: Just in the past few weeks I have been having a very hard time streaming Netflix content. At first it seems to get worse during prime hours. Recently it would appear that I’m having trouble regardless of the time of day.

When I load up a TV show or movie on Netflix, regardless of the quality, I’m always having to wait for it to buffer. Once it does buffer, I get to watch a few minutes until I’m presented with yet another buffering screen. I didn’t have this problem a couple of months ago.

Now some (Comcast…) would say that I have inadequate bandwidth to handle a Netflix Stream. On the Netflix website it clearly states that at least 5Mbps is required for an HD stream. My current Comcast package is for 6Mbps and I usually see 8Mbps. So clearly bandwidth isn’t a problem.

Another bit of evidence to support the fact that bandwidth isn’t a problem is that if I route my computer through a VPN, the Netflix stream plays perfectly in HD without any buffering issues. When I look at my router’s bandwidth graph, I can see that I am fully utilizing the 8Mbps connection that I have. Unfortunately the second I disconnect the VPN, the problem comes back. The endpoint on the VPN itself is located in Texas while I reside in Illinois.

My router's bandwidth graph shows that I'm only using about 25% of my Internet connection when trying to stream Netflix without a VPN.

My router’s bandwidth graph shows that I’m only using about 25% of my Internet connection when trying to stream Netflix without a VPN. During this, the stream is not HD and I am constantly being presented with buffering screens.

 

Now that we're going through a VPN, my connection is being fully utilized and I'm streaming in HD without any stops for buffering!

Now that we’re going through a VPN, my connection is being fully utilized and I’m streaming in HD without any stops for buffering!

As you can see from this speed test without a VPN, the issue is only with Netflix.

Even Steam doesn't have an issue using all of my available bandwidth.

Even Steam doesn’t have an issue using all of my available bandwidth without the need for a VPN.

 

What I’ve Tried

So far I have tried many things to attempt to fix this issue. Most of them I have done multiple times as I talked to multiple support agents from both Netflix and Comcast.

  • Different Browsers
  • Different Computers
  • Cat6 Ethernet Directly Into Modem
  • Comcast Signal Tests (These were done by Comcast agents a few times. Each time, the signal was normal.)
  • Adjusted Netflix Stream Quality (Low, Median, High, Auto, Etc. All provide similar results…)

Comcast Said…

So far I have talked to two Comcast support agents via their live chat. I have also been in contact with a number of their @ComcastCares representatives on Twitter. For the most part, they just ran me through the basic connection tests, stated they don’t throttle connections, and then told me to buy a higher tier over and over agian. One guy via live chat did have the following to say:

Andrew > So what you are saying is that Comcast is currently blocking the ports that Netflix utilizes?
Prince Jhanne > We are routing each Customer to Netflix and so far Netflix can correct the problem on thier system.
Prince Jhanne > That is correct since we also have Online TV service as same as Netflix.
Prince Jhanne > To be cleared Netflix in our Competitor in Online TV access, that is why we are not yet compatible on thier system.

That portion of the chat, especially the last bit, is quite alarming. He makes it sound as if Comcast is purposefully restricting access to Netflix because they are a competitor.

Netflix Said…

I contacted Netflix live chat support as Comcast recommended and they also took me through some basic troubleshooting steps that did not help my problem. The third Netflix agent said the following when I mentioned the fact that Comcast is my ISP:

Netflix Shana-Kay:

We have been getting a number of reports from our comcast customers that they are having issue streaming to us. We have been trying to reach out to the ISP to get it fixed however they refuse to help and just say the issue is on our end even though all our servers are up and running.
You: Ohh I believe it…

Netflix Shana-Kay:

We do suspect though its because they are launching their own streaming service that why they have been giving their customers less bandwidth so they can actually get our customers

This statement here just confirms what the other Comcast agent said to me. I have no idea if it’s actually true, but it wouldn’t surprise me if Comcast was shaping our traffic again.

Temporary Solution

Fortunately I have found a temporary solution to this mess. I use an $8 per year VPN that I setup on a VPS in Texas. So far this fixes most of the issues I am having with Comcast. Like I said though, this is a temporary solution. I’m still awaiting a proper fix from Netflix or Comcast. I shouldn’t have to use a VPN… Yet again, who knows what else Comcast is doing with my packets. I honestly don’t trust them…

Conclusion

I’m going to do my best to get a solution for my problem from either Comcast or Netflix. When I do, I’ll be sure to share it with you guys! Feel free to share your thoughts in the comments or provide any troubleshooting ideas. I’m desperate at this point…

  • Fried

    A VPN encrypts all traffic between your computer and the end point of the VPN itself. As far as Comcast is concerned, when I use a VPN, they have absolutely no idea what kind of traffic I am using. For all they know, I could be browsing their own online media library, thus, they allow the connection to utilize all available bandwidth. So if anything, it proves that Comcast could potentially be throttling Netflix.

    Fried

  • Dissappointed in Comcast

    I am having the same problem. Both “technicians” I spoke with told me to purchase a new router. I purchased a new router/modem combination. I purchased the one the “technicians” recommended. It did NOTHING. Funny thing is I never, never, never had a problem when I was bundling @ a whopping $202.00 a month. Took a pay cut recently and had to find alternatives to some of my wants vs. needs. I honestly thought Comcast was a good, honest company.

  • Netflixer

    A VPN “tricks” Netflix to send the traffic to you a better way as your IP address is not Comcast. In the end this is still using Comcast’s network, broadband and exchange points. What it proves is Comcast is not “blocking” or “throttleing” Netflix as you are still getting Netflix through Comcast.

    So since Netflix “can” send it to you with performance, and when they do Comcast does nothing different with it… Why doesn’t Netflix send you a good stream on your IP?

    • Thanks for the comment but unfortunately, you’re not quite right. When you say,

      “What it proves is Comcast is not “blocking” or “throttleing” Netflix as you are still getting Netflix through Comcast.”

      A VPN encrypts all traffic between your computer and the end point of the VPN itself. As far as Comcast is concerned, when I use a VPN, they have absolutely no idea what kind of traffic I am using. For all they know, I could be browsing their own online media library, thus, they allow the connection to utilize all available bandwidth. So if anything, it proves that Comcast could potentially be throttling Netflix.

      • proxy

        Try the same test with a proxy (non-encrypted)

        • I’d be happy to try this out, once I find a way to do so. I tested out OpenVPN without encryption, but I wasn’t confident in the results.

          I’m starting to believe the fact that Comcast isn’t purposefully blocking or throttling connections to Netflix. Although that doesn’t mean that they are not to blame for the problem. I think the issue may be a bottleneck somewhere in their network where they connect to higher tier networks. So although they aren’t throttling, they are still responsible for not paying for better/more connections to avoid these possible bottlenecks. Just a thought…

          • proxy

            That is entirely possible as I’m pretty sure a few occational bottlenecks are not uncommon with almost every ISP. Luckily CDNs are able to route around these bottlenecks and have the capability to do so (if they choose to). This is how Akamai, Limelight, etc have built their business and how a CDN is suppose to operate. Given enough traffic, a CDN can even create a bottleneck and move it around at will.

            You have proven that there are good options to reach you with your VPN/proxy testing. The question is why are bottlenecks being chosen to reach you on one IP and not the other? ISPs don’t choose the incoming path (bottleneck or not)… CDNs do.

            • Mario

              From what I’ve seen: streaming through a tv takes much more bandwidth than a phone/tablet. So, Comcast doesn’t care if you stream on your phone/tablet; but once the demand of a tv is requested, you’re throttled.

  • Neil Petroff

    Many of us are having the same problem, and we too are desperate. See this Comcast forum for user results: http://forums.comcast.com/t5/Basic-Internet-Connectivity-And/Is-Comcast-blocking-Netflix/td-p/1885277

    • Thanks for the link! I would post in the thread, but it looks like Comcast forces you to tie your account to a username on the forum; which I would rather not do. Feel free to post any questions here in the comments! I’m happy to share what I know and answer any questions.

  • Patrick La Salle

    how would i set up a vpn to combat the rebufferring issue

    • I bought a 32MB VPS for $8 a year and then setup OpenVPN on it. Took me a few minutes and so far has provided a temporary solution to my issue.

  • Ryan Cerbus

    I’m having the exact same issue. Talked with a bunch of other people at work today, and I counted seven people in my area who are all experiencing the same issue. Came to Reddit hoping to find a fix, ended up here.

    What’s really weird is that I can stream HD Netflix from my iPhone/iPad no problem. So my work-around has been using my Chromecast with my iPhone to get reliable HD.

    One of my coworkers is convinced that Comcast is throttling Netflix traffic. Since I get 25mbps download speeds and I can watch HD video reliably from any other service, it’s starting to seem like that might be the case.