trabu87
Level 1 (0 points)

Q: Slow Internet Connection

Hi Everyone,

 

I often refer to this community and it has been super helpful for many years.


I'm not sure how to tackle this problem: the internet speed is slow but I know it's not the hardware. I recently got the wi-fi card replaced by Apple and when I test the connection on a different User than my main one, the connection hits the usual 100mb/s. On my main User the same connection on the same servers (I use speedtest.net) stays below 20mb/s.

 

I just can't understand the reason. Here's what I've tried without success:

  • PRAM and SMC resets
  • creating a separate Location in System Preferences > Network
  • shutting Bluetooth off
  • speed tests on different browsers (Chrome, Safari, Firefox)
  • deleting all extensions
  • quitting the biggest third party internet connections (like Dropbox, Adobe Cloud, etc)
  • malware and virus scan (I used Sophos)

 

nothing has worked: the connection stays consistently under 20mb/s. The only thing that has worked is logging out of my account and logging into a separate account: testing on this other account brings it consistently back up to 100mb/s. This is why I know it's something related to software.

 

How do I find who is slowing down the connection? How would you approach it?

 

[I have a MacBook Pro (Retina, 15-inch, Early 2013) with Yosemite 10.10.3.]

 

Thank you for any help!!!

—A

MacBook Pro (Retina, 15-inch, Early 2013), OS X Yosemite (10.10.3)

Posted on Jun 5, 2015 8:52 PM

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trabu87

Q: Slow Internet Connection

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  • Helpful answers

  • by dominic23,

    dominic23 dominic23 Jun 6, 2015 5:28 AM in response to trabu87
    Level 8 (42,105 points)
    Mac OS X
    Jun 6, 2015 5:28 AM in response to trabu87

      Go step by step by step and test.

     

     

    1. Power off the router. Unplug it from the wall. Wait a while.

        Plug it back to the wall. Power the router on. Wait until all the lights are lit properly. It will take a while.

        Restart the computer.

     

        Start up in Safe Mode.

        http://support.apple.com/kb/PH14204

     

    2. Empty Caches

     

        Safari > Preference > Advanced

        Checkmark the box for "Show Develop menu in menu bar".

        Develop menu will appear in the Safari menu bar.

        Click Develop and select "Empty Caches" from the dropdown.

     

    3. Deselect Proxies if selected.

     

        System Preference > Network > Advanced  > Proxies Tab

        Under "Select Protocol", uncheck any box if selected.

        Click "OK" then  "Apply”.

     

    4. Hold the "Option" key down and click the wifi icon in the menu bar.

        Choose "Open Wireless Diagnostics..".

        Run Wireless Diagnostics.

     

        https://support.apple.com/kb/PH18565?locale=en_US

     

        https://support.apple.com/en-us/HT202663

  • by Linc Davis,

    Linc Davis Linc Davis Jun 6, 2015 6:27 AM in response to trabu87
    Level 10 (208,037 points)
    Applications
    Jun 6, 2015 6:27 AM in response to trabu87

    Start by removing "Sophos." You should do that even if it's not causing the problem, because it's worse than useless.

    Remove the Sophos product by following the instructions on this page, and also this one, if applicable. If you have a different version, the procedure may be different.

    Back up all data before making any changes.