Slow Wired Connection on One Computer

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acsdog

acsdog

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Jun 26, 2013
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So recently I noticed that I was getting high ping and terrible lag on my games (PS2, Insurgency, CS:GO). I ran a speed test (Ookla) and the results were surprising. http://www.speedtest.net/my-result/3682419758
I usually get 120 Mb/s down and 11 Mb/s up, but my download speed has taken a turn for the worse. The test will start out with .2 Mb/s (the needle with be very shaky) and then jump to anywhere from 7 to 70 Mb/s, with frequent drops. Then the upload test will appear to be normal, just a bit jumpy. I tested my other computer on THE SAME SWITCH AND ROUTER and it gets full speed. I also tried using a different cable with no luck. Just in case it was the switch I tried another one with no luck. I tried re-installing my network driver with no luck, and tried running a virus scan (MBAM). Nothing. So now I have no idea what to do. Steam downloads seem ok, about 7 MB/s (I usually get 15). Skype is ok. But games are the worst, with constant lag spikes. I am using Comcast if that helps, but it seems that the problem is localized to my gaming machine.
 
Solution
braceyourself07
No ideas without further testing. See if you can get ahold of an inexpensive USB ethernet adapter or borrow one and try it on your computer and see if it gives you the same results. You could also remove and reinstall the network card drivers (realize that your computer will be disconnected from the network when the drivers are removed) using the latest drivers specifically for your ethernet port. I'm assuming it's the on-board LAN on your ASRock Z77 Extreme 4.

http://www.asrock.com/MB/Intel/Z77%20Extreme4/index.asp?cat=Download

There is the link to ASRock's driver download page for the Extreme 4.
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braceyourself07

braceyourself07

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Apr 20, 2013
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10,560
It could be a symptom of a failing network card which may cause it to drop packets. If packets are lost, it wastes time (slowing your speed down) re-attempting to send the failed packet. You've pretty much isolated it to your computer vs another computer on your network, but to see it in action you could open up a "cmd" window (Start -> Run "cmd" and then typing "ping 192.168.0.1" or whatever the address is of your router) and see how many packets it loses.

If it's a desktop and you are confident in opening up the box, you could try re-seating your network card. If it's integrated into the motherboard, you could add a network card if there are expansion ports... or at the very least, if it's a laptop or there are no expansion ports, get a USB network adapter (not ideal).
 
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braceyourself07

braceyourself07

Honorable
Apr 20, 2013
30
0
10,560
No ideas without further testing. See if you can get ahold of an inexpensive USB ethernet adapter or borrow one and try it on your computer and see if it gives you the same results. You could also remove and reinstall the network card drivers (realize that your computer will be disconnected from the network when the drivers are removed) using the latest drivers specifically for your ethernet port. I'm assuming it's the on-board LAN on your ASRock Z77 Extreme 4.

http://www.asrock.com/MB/Intel/Z77%20Extreme4/index.asp?cat=Download

There is the link to ASRock's driver download page for the Extreme 4.
 
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