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Provo, UT, is interesting. It has both Google Fiber and Comcast. Their performance is essentially the same, with perhaps a very slight edge to Comcast. I tried to compare them in the other Google Fiber cities, but Provo was the only one I saw both Google and Comcast in. (Austin, TX, is interesting, because that is supposedly a Google Fiber city, but Google Fiber does not show up in the report).

Comcast has similar performance in all the cities I've lived in as an adult (Los Angeles area, Silicon Valley, Seattle, small towns on the west side of Puget Sound). Certainly not what I expected given all the complaining I see on the net about Comcast and YouTube performance.

> Certainly not what I expected given all the complaining I see on the net about Comcast and YouTube performance

Comcast gives many things about which to complain, but I've never had an issue with Youtube on them. What I've been shocked by in the past is the disparity between youtube on my comcast connection and youtube on people's TimeWarner connection when I've visited, where it has been completely abysmal in the past. Like, 1990s RealPlayer quality, not only because you have to turn it down to 144p just to play, but also because it still stutters horribly even at that resolution.

I feel like most of the "one weird DNS trick to fix youtube" posts have been about timewarner, though I don't know if my memory is accurate there.

Notably TimeWarner looks fine on these graphs (at least in a few places where I've had friends complain about it in the past), so maybe they've fixed things.

Oddly my wife used to see this on her laptop in our apartment in Los Angeles. I would play a video, and it would be fine at HD. I'd ping her the link, and she would attempt to play it and it would be stuttery and crappy. I'm not sure what changed, but eventually it just cleared up. We were on the same connection. Very odd.

Were you using the same dns servers?

I believe so. She probably wouldn't know how to change her DNS settings, and I don't think I would have changed either hers or my own from the default. I do recall turning off my ISP's auto-redirect on bad DNS spam. (It would try to suggest sites they got money from if I entered a website that didn't exist, for example.) But beyond that, I don't think we did anything to change DNS.

Were you using the same browser and Flash Player versions?

It's likely we were using the same browser. I'm not sure about Flash Player versions. Even if we weren't, why should that matter? I doubt we were too far off in the version numbers we used. Does YouTube do some sort of caching of info about what version of Flash you're using?

Google Fiber deployment in Austin hasn't started.

I have had serious issues with Hulu, YouTube, and Netflix with Comcast in the past (about a year ago most recently). After a year with a spotty WISP, I'm on Comcast again, and the performance seems to be better now.

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