grahammiranda

Q: Wifi is incredibly slow on OS X El Capitan

So after installing OS X El Capitan my Wi-Fi is so so so so so slow.

 

My Internet Connection Speed is 2Mbps (240kb/sec) and it shows 2Mbps on my iPad and iPhone (using the speedtest.net app). On my MacBook Pro it shows me 120-250Kbps (10 to 25kb/sec) when I'm using Spotify, YouTube and anything that's Internet based (Apple Forums took me a minute to open)

 

I've never ever had this problem on Yosemite. My wifi works fine for sure. Even during downloading OS X El Capital from the App Store my speed was constant 230-240 Kb/sec but after installing El Capitan nothing works fine (Internet Based Applications)

 

I did everything I could. Deleted Wifi AP Name and added it back. Restarted everything (Router and Mac). Turned off Wifi and turned it back on.

 

I don't think its my wifi router or anything or else fault as my iPad and iPhone would have been affected as well.

 

Can someone please tell me if they face this issue as well and if yes what's the solution?

MacBook Pro (Retina, 15-inch, Late 2013), OS X El Capitan (10.11)

Posted on Oct 4, 2015 5:16 AM

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Q: Wifi is incredibly slow on OS X El Capitan

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  • by HarvPro,

    HarvPro HarvPro Oct 7, 2015 1:57 AM in response to grahammiranda
    Level 1 (5 points)
    Oct 7, 2015 1:57 AM in response to grahammiranda

    The only thing that seems to improve Wi-Fi speed for me is to turn Bluetooth off - and even then not by much.

     

    This is ridiculous. I buy a new macbook pro 15 which works very well. Within one week I upgrade to El Capitan as Apple claims it will be even faster.

     

    Boom! My macbook suddenly works like a dog! To make matters worse new macbook pros don't come with an ethernet port - I have to buy an adaptor for $29!!

     

    So as you can guess I am not happy as I've been misled - bought a fast laptop, installed an even faster version of OSX only to experience something much worse than what i started with (old iMAC).

     

    Emptying cache is a waste of time and blatantly is not the cause of this problem - its a bug!!

     

    Any news from Apple or are they ignoring this?  Macbook Pro on Ebay anyone?

  • by grahammiranda,

    grahammiranda grahammiranda Oct 7, 2015 10:15 AM in response to phinicolas
    Level 1 (15 points)
    Apple Watch
    Oct 7, 2015 10:15 AM in response to phinicolas

    I have the same MacBook as well. 2013 Late

  • by luccalj1,

    luccalj1 luccalj1 Oct 7, 2015 10:33 AM in response to grahammiranda
    Level 1 (0 points)
    Oct 7, 2015 10:33 AM in response to grahammiranda

    Can anyone confirm if the problem was fixed in 10.11.1 new beta released today

  • by Precoria,

    Precoria Precoria Oct 7, 2015 10:34 AM in response to grahammiranda
    Level 1 (0 points)
    Oct 7, 2015 10:34 AM in response to grahammiranda

    I have an iMac that is only about a year old.  Just did the update 2 days ago and have had wifi speeds of painfully slow dial-up proportions since then.

    Why does Apple keep releasing updates for their phones and computers that are clearly not tested and ready for release yet?

  • by Wiz1331,

    Wiz1331 Wiz1331 Oct 8, 2015 6:38 AM in response to grahammiranda
    Level 1 (0 points)
    Oct 8, 2015 6:38 AM in response to grahammiranda

    Same problems on a rMbp 2012 on El Cap, have reset router many times. rMbp is on my 5ghz network on a non crowded channel literally sitting beside the router. Have gone into the network Plist's and reset them too. Still the rMbp can't get over 30mb down on the plus side all other devices are flying high at around 90-100mb at least they appreciated the extra optimisations

     

    Only became aware of this issue on El Cap.

  • by Luis Sequeira1,

    Luis Sequeira1 Luis Sequeira1 Oct 8, 2015 7:31 AM in response to luccalj1
    Level 6 (12,612 points)
    Mac OS X
    Oct 8, 2015 7:31 AM in response to luccalj1

    luccalj1 wrote:

     

    Can anyone confirm if the problem was fixed in 10.11.1 new beta released today

     

    A few people are having a problem. It is a very annoying problem, but one that is certainly not widespread.

    The problem with Yosemite until 10.10.4 was a much more serious one that affected thousands of users or more, and it took quite a while to fix.

    I see no indication that this problem is anywhere near that size - otherwise there would have been an outcry "El Cap broke WiFi" in the popular press. It seems to affect a very small portion of users. The problem is in figuring out is different in those affected, and it is not easy.

     

    I am more inclined to believe that this, as a few other problems with El Cap, have to do with incompatible drivers or applications than anything else.

    So I suggest the following: install a CLEAN El Cap system on a separate partition or hard drive, do NOT migrate your stuff, and try WiFi there. If I were a betting man, I'd bet a dollar against a cent that such clean installation would NOT suffer from those WiFi issues; if I am right this would show that is not in fact an El Cap bug.

  • by jubamad,Helpful

    jubamad jubamad Oct 10, 2015 12:07 AM in response to grahammiranda
    Level 1 (5 points)
    Oct 10, 2015 12:07 AM in response to grahammiranda

    I'm having the same issue.

     

    After upgrading all my macs (Macbook Air, iMac, Macbook Pro Retina Mid2012), the only with the slow internet issue is the MBP.

     

    I have fibre internet connection (30mbps down, 10mbps up). I was getting 2mbps down, 3mbps up.

     

    I have done the following steps:

     

    - Turned off the router, wait 10 secs, turn on again - FAILED

    - Cleared Safari/Chrome cache, etc - FAILED

    - Reset Mac - FAILED

    - Renewed DHCP lease - FAILED

    - Delete, add new WIFI connection - FAILED

    - Rang Apple support. Guy on the phone asked to reset router again - FAILED

    - Then I suggested resetting PRAM (turn off Mac, then hold Command + Option + P + R and tap power button) Wait for 2 Apple chimes and release keys.

     

    This last step brought my internet speed up again. I tested speed using speedtest.net and after a few tests speed went down to 15mbps down and 5mbps up. Then I renewed the DHCP lease again and speed is up again. Working fine for now after a few more tests.

     

    The Apple support guy said there are no records in Apple's system that OS X El Capitan is having wifi issues. So apparently Apple is not treating it as a bug to fix.

     

    I will keep an eye on my speed and let you know if it goes down again.

  • by grahammiranda,

    grahammiranda grahammiranda Oct 10, 2015 12:22 AM in response to jubamad
    Level 1 (15 points)
    Apple Watch
    Oct 10, 2015 12:22 AM in response to jubamad

    I think this might have just helped me!!!!

     

    I'm getting 1.8Mbps on my 2Mbps connection which is not bad cause I was getting around 0.2Mbps before

     

    Thank you. I'll see if this works forever or this is just a temp fix...

  • by jubamad,

    jubamad jubamad Oct 10, 2015 12:39 AM in response to grahammiranda
    Level 1 (5 points)
    Oct 10, 2015 12:39 AM in response to grahammiranda

    Great!

     

    Mine is still fine.

     

    Hope this fix the issue for everyone.

  • by jubamad,

    jubamad jubamad Oct 12, 2015 12:47 AM in response to grahammiranda
    Level 1 (5 points)
    Oct 12, 2015 12:47 AM in response to grahammiranda

    Actually, nope, unfortunately that didn't fix the problem 100%.

     

    Yesterday WIFI worked fine, full speed.

     

    Today WIFI wouldn't connect, always dropping and very slow again.

     

    Then restarted the Mac, renewed DHCP lease and nothing, it didn't get better.

     

    Now speed is around 60% slower.

     

    I will get my Mac back to Yosemite and wait a few updates before upgrading again

     

    Thanks Apple!!

  • by grahammiranda,

    grahammiranda grahammiranda Oct 12, 2015 8:23 AM in response to jubamad
    Level 1 (15 points)
    Apple Watch
    Oct 12, 2015 8:23 AM in response to jubamad

    I tried getting back but it's a lot of installing to do and it's really annoying. I'll wait for an update to see what happens. Seriously I did not expect this from OS X El Capitan. Mine too dropped yesterday and messed up a Skype call.

  • by Wiz1331,

    Wiz1331 Wiz1331 Oct 12, 2015 9:23 AM in response to Luis Sequeira1
    Level 1 (0 points)
    Oct 12, 2015 9:23 AM in response to Luis Sequeira1

    Hey Luis,

               Clean installed El cap onto a separate partition in hopes it would remedy the problem but unfortunately it led to the same result. To clarify the Wi-fi is not broken just working very badly. My home internet connection is pretty fast so it's not too bad there but if I'm on a slower network it is torturous.

  • by Luis Sequeira1,

    Luis Sequeira1 Luis Sequeira1 Oct 12, 2015 9:29 AM in response to Wiz1331
    Level 6 (12,612 points)
    Mac OS X
    Oct 12, 2015 9:29 AM in response to Wiz1331

    Wiz1331 wrote:

     

    Hey Luis,

               Clean installed El cap onto a separate partition in hopes it would remedy the problem but unfortunately it led to the same result. To clarify the Wi-fi is not broken just working very badly. My home internet connection is pretty fast so it's not too bad there but if I'm on a slower network it is torturous.

     

    Sorry to see it did not help, I was really hoping it would.

  • by conejo61,

    conejo61 conejo61 Oct 12, 2015 10:31 AM in response to grahammiranda
    Level 1 (5 points)
    Oct 12, 2015 10:31 AM in response to grahammiranda

    my thanks to Dominic23. I found this thread after experiencing dramatically degraded WiFi speeds. At our small business, I was testing out at 15 meg down/5 up and it's normally 40/6. My office manager tested at 42/6. I reset PRAM, that's all I did, and now I'm back at normal speeds. Thank you!

  • by Wiz1331,

    Wiz1331 Wiz1331 Oct 13, 2015 6:04 AM in response to Luis Sequeira1
    Level 1 (0 points)
    Oct 13, 2015 6:04 AM in response to Luis Sequeira1

    Thanks anyway, gonna try doing the same with a linux distro to see if there's any change.

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