yes and i also did this and unplugged my modem waited 10 to 20 seconds and that did nothing. But sometimes for upload speed contacting xfinity for a remote reboot will do it. Not sure why that seems a better reboot for modem but for me personally it has always worked unless there is a wire issue. Accept nothing fixes my upload speeds. I would be super happy if I ggot 30 to 35 or even 20 to 27 but 6 to 15 is really bad. Upload speeds also does effect game performance in uploading texture , live broadcasts and so on it's not just downlkoad speed that makes things fast and stead. If you can't get your down fixd by xfinity's remote restart by customer service they would set up a tech visit though. I had that issue first 2 tech visits it turned out my modem was greyed so that was bad. I always use the website text service because I find it's more pleasant than the ones who work in the office at the albuquerque ,NM. just explain to them you have alread tried unplugging modem to reboot and using app to do so.
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