Wifi internet really slow only on iMac

Question

Level 1

5 points

Wifi internet really slow only on iMac

I've had this problem for a while and my iMac has been in 2 different locations in my house.

The internet speed is really slow - 1mbps at best, even though the signal bar is showing full!

If i put my iPhone, iPad or macbook in the same place i get 40+mbps!!

So for some reason my iMac is running so much slower than all other apple products and virtually unusable. My software is fully up to date on OS X 10.7.5

Has anyone got any idea what is causing this and how i can finally solve this annoying and frustrating problem?

Posted on Jan 4, 2017 2:04 AM

Reply

Answer 1

CarlAVII

Community Specialist

Jan 5, 2017 1:52 PM in response to thegooner333

Hi there thegooner333,

It sounds like you are getting very slow internet speeds on Wi-Fi using your Mac, but iOS devices seem to function without issue. I would suggesting the Wireless Diagnostics tool to help you get that resolved:

Check for Wi-Fi issues using your Mac

Thank you for using Apple Support Communities.

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Answer 2

Aug 18, 2017 6:41 AM in response to thegooner333

Is the iMac close enough to the modem or router to run an ethernet cable between the two? If so hook up iMac to ethernet and than use ethernet in the Network connections

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Answer 3

MichelPM

Level 10

80,968 points

Aug 18, 2017 10:40 AM in response to SRClinica

CCleaner is total crapware/garbageware/malware and ANYTHING, ANY THING LIKE IT should never be used on a Mac and Mac OS.

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Answer 4

Aug 17, 2017 10:49 PM in response to thegooner333

Today i received my 2017 imac 27" and the wifi download speeds are 1/5 that of my 2011 MBP.

iMac 2017: 17 Mbps

MBP 2011: 114 Mbps

Diagnostics tells me nothing and both machines have the same settings.

My 2011 is 802.11n - in theory my new iMac should be faster.

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Answer 5

MichelPM

Level 10

80,968 points

Aug 18, 2017 10:38 AM in response to antimation

Check the software on your MODEM/router to make sure there are no settings retarding your Wifi or data connection.

Remember, if anyone else is using the same Wifi network at the same time, your connection speeds can decrease.

Ditto for anyone using your ISP service at the same times you do.

Heavier traffic on an ISP service can, also, degrade your Internet data speeds further.

Make sure you have no settings on your Mac that is preventing full wireless data throughput.

If you installed antivirus software on your Mac, it is not needed on the Mac OS and should be properly uninstalled per the Antivirus developers instructions.

Make sure you don't have any background Internet hogging activities going on.

Something like Google Drive and Google Chrome, for a good example, are both heavy Mac hardware/software/Internet resource hogs.

Good Luck to You!

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Answer 6

Aug 18, 2017 3:52 AM in response to thegooner333

I advise you to pass the Ccleaner tool to the computer, have everything updated.

Check that this suspicious program is not consuming internet connection

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