3 Replies Latest reply: Jun 12, 2012 6:27 AM by Linc Davis
27bas Level 1 Level 1

Hi everyone


Hope someone can give me some ideas on correcting my internet issues...


I've recently upgraded my internet speeds through my ISP to have 50Mbps download and 2Mbps upload.  I use my 2TB Time Capsule as a router as it has by far provided the best connectivity than any other router.  I run dual network - connect my iPhone 4S through standard network and my iMac through 5GHz network.  Since upgrading my speed, I have noticed that my iMac speeds vary greatly, but most of the time I'm struggling to get more than 10Mbps download, however on my iPhone I easily achieve almost 40Mbps.  I have tried different browsers, and ensured all other applications are closed and even switched the iMac (2009 i7 quad core) to the standard network.  At that point I noticed a slight increase in speed but it was short lived.


I am stumped on what to try next.  Does anyone have ideas? The iMac is a little hot, but nothing that isn't normal so I can't put it down to heat or anything.  Is there anything I have failed to check that may help?


I recently installed Windows 7 through bootcamp but didn't expect that to impact anything, however it was around a SIMILIAR time that I noticed issues, as previously I was getting a consistent connection of 20Mbps before I upgraded.


Any advice would be excellent!


Thanks everyone

iMac, Mac OS X (10.7.4)
  • Linc Davis Level 10 Level 10
  • 27bas Level 1 Level 1

    Yup, exhausted that first.


    Setting the 5GHz channel instead of Automatic has assisted, but still not where it should be.  I have obviously done the basics, restart iMac, Time Machine with no change.

  • Linc Davis Level 10 Level 10

    Boot into Recovery by holding down the key combination command-R at the startup chime. Release the keys when you see a gray screen with a spinning dial.


    Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. It won’t work with USB or PPPoE modems, or with networks that require any kind of authentication other than a WPA or WPA2 Personal password.


    From the Recovery screen, select Get Help Online. A clean copy of Safari will launch. No plugins, such as Flash, will be available. Test. After testing, reboot as usual.