Forum Thread

Certain web sites loading slowly, but not all?

185 22 February 1, 2018 at 10:57 AM
I've been having some internet issues the past several days that confuse me a bit. The computer I'm on is wired, so it shouldn't be a wireless connectivity issue -- although my wired internet is via a USB network adapter, not something native, and it has some idiosyncrasies too.

The general issue has been that certain web sites load very slowly -- gfycat, Imgur, edX, Piazza, sometimes reddit. Others reliably load fast -- Facebook, Google, some others as well. Whenever it's happening, I'll pull up a speed test. 80% of the time it shows my usual fast (>200Mbps) speeds. 20% of the time the speed test initially fails, but then if I refresh it works the second time showing those same high speeds.

The fact that it's inconsistent between different web sites confuses me. It's also the case that our wireless devices seem to struggle with the same web sites, so I don't think it's specific to my computer.

Any suggestions on next debugging steps?

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What are you using for DNS? The ones provided by your ISP most likely? Try switching to Google's servers or, even better, get a copy of DNS Bench from grc.com and run that to see which ones are fastest for you then test the same sites again.
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#3
Quote from joynerCN
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I've been having some internet issues the past several days that confuse me a bit. The computer I'm on is wired, so it shouldn't be a wireless connectivity issue -- although my wired internet is via a USB network adapter, not something native, and it has some idiosyncrasies too.

The general issue has been that certain web sites load very slowly -- gfycat, Imgur, edX, Piazza, sometimes reddit. Others reliably load fast -- Facebook, Google, some others as well. Whenever it's happening, I'll pull up a speed test. 80% of the time it shows my usual fast (>200Mbps) speeds. 20% of the time the speed test initially fails, but then if I refresh it works the second time showing those same high speeds.

The fact that it's inconsistent between different web sites confuses me. It's also the case that our wireless devices seem to struggle with the same web sites, so I don't think it's specific to my computer.

Any suggestions on next debugging steps?

If I had to guess, it sounds like your modem may be erroring\having issues. I would try on a second computer if you have one to confirm the speed problem is consistent across devices. Then connect your PC directly to your modem to take your router out of the equation. If the problem is consistent, then it is time to call your internet provider to check things out.
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Quote from Noddy
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What are you using for DNS? The ones provided by your ISP most likely? Try switching to Google's servers or, even better, get a copy of DNS Bench from grc.com and run that to see which ones are fastest for you then test the same sites again.

He can certainly check DNS, but realistically, major sites are not going to slow down\not work while others do if the DNS is off from a provider.
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#5
Quote from YanksIn2009
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If I had to guess, it sounds like your modem may be erroring\having issues. I would try on a second computer if you have one to confirm the speed problem is consistent across devices. Then connect your PC directly to your modem to take your router out of the equation. If the problem is consistent, then it is time to call your internet provider to check things out.
Gotcha, thanks! This is the only wired computer, so I'll try to figure out a way to bypass the router. The issue is also that it's intermittent, so it'd be difficult to say if seeing the problem resolve is because I'm bypassing the router or just because it's not occurring at that moment.

The modem is pretty old, though.
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Quote from joynerCN
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Gotcha, thanks! This is the only wired computer, so I'll try to figure out a way to bypass the router. The issue is also that it's intermittent, so it'd be difficult to say if seeing the problem resolve is because I'm bypassing the router or just because it's not occurring at that moment.

The modem is pretty old, though.

Just take the ethernet wire from he back of the pc and connect directly to your cable modem, bypassing the router and see if you can get an outside internet connection and at what speed, It can be a pita to deal with all the wires behind a computer desk I know.

As to an intermittent problem, they are the worst. You can also try calling your provider when you are having an issue and see if they can check things out remotely. If the modem is erroring or they are not getting a clean signal, they should be able to tell that.
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Quote from joynerCN
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Gotcha, thanks! This is the only wired computer, so I'll try to figure out a way to bypass the router. The issue is also that it's intermittent, so it'd be difficult to say if seeing the problem resolve is because I'm bypassing the router or just because it's not occurring at that moment.

The modem is pretty old, though.
Define old?
Do you own it or rent it?
Find out from your provider - they probably even have this on their web site - Xfinity does for example - what modem(s) they currently offer and if your modem may perhaps be "end of life" which means works but is no longer supported and may not work on all tiers, etc.

Also, when testing the pc connected directly to the cable modem please restart the modem and the pc before you try to connect to the outside world. Power both off, give it a minute, power up the modem, wait about a minute, then power up the pc.
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#8
You should start with what kind of Internet Security/Antivirus are you running. Many activities that have full protection can also be slowing down your page loads. The websites you mentioned that feel slow, are known sites by the Antivirus companies as bad sites. So your antivirus works hard to scan every single page load before you view it and potentially get infected with something. You can also try disabling your antivirus and surf the internet for a while and see if the problem continues. If so, then you can move on to troubleshooting your hardware.
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