Download and upload speed randomly got much slower

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sergeantsilent

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Jun 22, 2014
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Starting around monday my internet download speed went from 25-30Mbps to 3 Mbps (tested with speedtest.net and the xfinity speed test.) I've done the tests on three separate computers: two running XP (one wireless, one wired) and one running win 8 (wired.) I've reset the modem (router is built in) as well as unplugged everything for a few minutes and plugged it back in. The modem/router are fairly new, the internet was setup only around 3 weeks ago. I did the dslreports.com line quality test and it showed 7% to 20% packet loss. What can I do to fix this?

Thank you for you time.
 

TerryNet

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Mar 23, 2005
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Terry
Since you mentioned using the "xfinity" speed test may I assume that you have Comcast, or at least cable service from some company?

The problem could be anywhere from the ISP to the modem/router. Can you think of any changes around Monday? Such changes could be adding another device or appliance to the electrical circuit powering the modem/router, modifying the coax cables or connections in any way, utility work near the cable drop to your residence, high wind or lightning if you have above ground cables, etc.

If the modem/router is plugged into a surge protector or power strip have you tested with it connected directly to an outlet?

Have you checked with your ISP to see if they know of any problems or have had other complaints from your neighborhood?
 

sergeantsilent

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Jun 22, 2014
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Yes I have comcast for TV and internet. There have been no changes that I can think of. I only touched the cables to the modem when I was unplugging them to reset it, and plugged it back in.

There were high winds but I do not know if there are above-ground cables.

The modem/router is plugged directly into an outlet, I've tried both plug-ins.

I haven't contacted the ISP yet because I wanted to make sure it wasn't on my end or something I did.
 
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