Slow Wifi in Mavericks

Hey paulkelly3003,

I know the issue only started recently, but I would still run through the following steps:

1. Hold the Option key while clicking the Wi-Fi menu.The PHY Mode line shows the protocol your computer is using to join the Wi-Fi network. If this does show the expected 802.11 protocol, you should check the settings of your Wi-Fi router. Consult the manufacturer of your router for information about configuring it.
2. Disable other active network services. Active network services consume a portion of the available bandwidth. Examples of these include file servers, video streaming, online games, and so forth. When these are in use, they may cause other services to slow down. Try turning off unused network applications to increase the speed of other applications. Be aware that other computers or devices connected to your network may also contribute to poor performance. If you are not sure if a computer associated with your Wi-Fi network is causing poor performance, try turning it off or disconnecting it from the network.
3. Use WPA2 Authentication, if available. The WPA2 authentication mode meets the highest standards for Wi-Fi compliance and should be used to provide the greatest speeds for modern Wi-Fi networks. Other authentication methods may reduce performance of your Wi-Fi network. In order to change the authentication method offered by your Wi-Fi router, you will need to contact the manufacturer.
4. Check your range to the Wi-Fi router and reduce the effect of interference. If your computer is too far from your Wi-Fi router or your environment has too much Wi-Fi interference, then your computer may not detect the Wi-Fi network properly. The easiest way to check for range limits with your Wi-Fi network is to move your computer or your Wi-Fi router closer together and make sure that there are no obstructions (such as walls, cabinets, and so forth) between the router and your computer.See Potential sources of wireless interference for more information about interference and solutions.
5. Try connecting to a different Wi-Fi network. If your computer works fine when connected to a different Wi-Fi network, then the issue may be related to your network router or ISP. In that case, contact the manufacturer of your router or your ISP.

via: Wi-Fi: How to troubleshoot Wi-Fi connectivity

http://support.apple.com/kb/HT4628

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Regards,

Delgadoh

I don't want to highjack this thread, but I have also been experiencing very slow (internet & local network) speed. I even did a fresh installation, but no luck. Unfortunately, none of Delgadoh's helped me.

I am sure it's related to the machine I am using: MBAir, i5 core, 4g Ram, bought late 2011. I have tried several other wifi networks with no luck.

BUT, my late 2009 iMac, i7, 12g Ram doesn't seem to have this problem.

I was having the same problem after upgrading to Mavericks on my Mac Mini.

I checked my network preferences; everthing looked good. Figured, it can't hurt to click the Renew Lease button for the WiFi adapter.

Problem went away immediately after the DHCP release was renewed. Back to normal speed. Why? I don't know.

Try the Renew Lease button. It can't hurt.

Wireless Connection Problems - Fix

Wireless Connection Problems - Fix (2)

Wireless Connection Problems - Fix (3)

Wireless Connection Problems - Fix (4)

Wireless Diagnostics - About

thank you for your help. Unfortunately, I had tried this already, (as well as Eric Root's links) but nothing did it.

Does the orignal poster had his problem solved?

I think I just need to see a genius in the next few days (and see if the problem also occurs on the Apple Store's wifi - which it probably will since it happened on the other wifis I had tried so far...)

😟 Sad... 😟

I forgot about those tricks!

I've been going through weeks with the same problem. My wifi on my 2012 15" MacBook Retina has been useless to do anything. Speed tests show I was barely reaching 1 Mbps on a network capable of 100+Mbs. So, for the first time in 18 months, I reverted to having to use a wired ethernet through an ethernet-thunderbolt dongle.

I've been reading this article for 3 weeks trying to figure out a solution, or see what was posted. I read all the tips, ran the wireless diagnostic, and read its recommendations, and found one that has WORKED.

I have been running 2 Airport Extreme routers + an express in my home to give me enough coverage. each extreme is at the opposite ends of my bungalow, and the express is actually running my Sonos. The tip said to make sure each router has a unique name. I did not have the setup this way, as I had them use the SAME wireless SSID as per other suggestions on this forum to have an 'extended' network. Anyway, I just renamed each router to have a unique wirless ID and now I get full speeds. Its a pain to have 4 networks names in the house, but at least my expected speeds are back, just got a 70 Mbps test score:)

I'm having the same issue. New MBPro 15 Retina, 16GB RAM, 1TB HD. On the N or AC wireless network it's slower than my 2009 MBPro 17. Very frustrating when you drop $3k+ on a laptop. I've looked all over the threads and no response from Apple or resolution. I'm not looking forward to talking to a "Genius". Maybe down grading this system to Lion will resolve the issue, assuming I can even install Lion on this system.

Why does Apple ALWAYS release software that does not work PROPERLY????? My internet is super slow due my intermittent wifi loss. This all started when I updated to MAVERICKS. It seems a cliche now, that Apple just never can sort themsleves out when it comes to wifi - they are just freaking useless - same old story like they did with Lion and then Mountain Lion.... always the wifi issue rears its ugly head and annoys all Apple hardware owners. We must always suffer due to the utter incompetence from Apple.

This worked for me, I switched to my non-extended "Guest" network and could use the internet again. With it on the extended network, it was taking about 60 seconds just to open www.google.com. My apple TV is on the extended network and it gives me trouble from time to time and I have to reset it. I have a Gen 2 Airport extreme (single band), a Gen 3 Airport extreme (dual band, I extended the 802.11a 2.5Ghz band) and an airport express (gen 1 or 2, the wall plugin type) which I also extend the 802.11a 2.5Ghz network with. The iMac actually exhibited this problem less frequently before Mavericks, but it still happened. Other hardware on my network experiences problems, my about 1/10th the time the iMac ever did.

I am guessing since most of my hardware is older than an iPhone 3 that I am experiencing planned obsolescence? 🙂

Thanks for the switching from the extended network suggestion.

I have same issue, bought a brand-new MBPro 13 Retina, 16GB RAM with Macericks pre-loaded, delivered 7th of October. Since approx. 5 days I have connectivity problems and wireless speed from my MBP goes down to sometimes 1 Mbps.

When the mac is sleep modus after wakeup I even get no connectivity to my wireless router at all.

All my other devices (3 iPhones, ATV2, windows business notebook, TV's) are constantly connected whenever I switch them on and want the use my own NAS resources or the Internet.

Fritzbox 7390; 2,4 GHz, WPA2, WMM, STBC, 802.11n+g+b - auto, 100% transmission power, WLAN transmission optimized for live TV.

I tried several different settings nothing helped - so went back to the original setting above

I assume a general issue - hope to get help here

Thx Helmut

I took my new MBPro15 Retina in the other day and they (Apple) claim it's a bad wifi card. So it's being replaced now and I'll let you know if it resolves anything.

Got my new MBPro Retina 15 back today....with the "replaced wifi card" the Genius bar said "it's much better". Well.....it's no different.

This is not a bad card issue. It's a Mavericks driver issue. Apple wake up and fix your mistake.

This is a ping to my default gateway on the MBPro15 Retina w/Mavericks.

64 bytes from 172.17.1.1: icmp_seq=554 ttl=64 time=1.207 ms

64 bytes from 172.17.1.1: icmp_seq=555 ttl=64 time=24.388 ms

64 bytes from 172.17.1.1: icmp_seq=556 ttl=64 time=47.283 ms

64 bytes from 172.17.1.1: icmp_seq=557 ttl=64 time=69.935 ms

64 bytes from 172.17.1.1: icmp_seq=558 ttl=64 time=93.021 ms

64 bytes from 172.17.1.1: icmp_seq=559 ttl=64 time=115.842 ms

64 bytes from 172.17.1.1: icmp_seq=560 ttl=64 time=138.594 ms

64 bytes from 172.17.1.1: icmp_seq=561 ttl=64 time=161.321 ms

64 bytes from 172.17.1.1: icmp_seq=562 ttl=64 time=186.335 ms

This is on my MBPro 17 2009 with Mavericks, right next to the MBPro15 and pinging at the same time, on the same Wireless connection. Only differene the MBPro17 has N and the MBPro15 has AC wireless card......Funny the older unit is more reliable.

64 bytes from 172.17.1.1: icmp_seq=295 ttl=64 time=3.465 ms

64 bytes from 172.17.1.1: icmp_seq=296 ttl=64 time=0.792 ms

64 bytes from 172.17.1.1: icmp_seq=297 ttl=64 time=3.281 ms

64 bytes from 172.17.1.1: icmp_seq=298 ttl=64 time=5.605 ms

64 bytes from 172.17.1.1: icmp_seq=299 ttl=64 time=5.591 ms

64 bytes from 172.17.1.1: icmp_seq=300 ttl=64 time=5.835 ms

64 bytes from 172.17.1.1: icmp_seq=301 ttl=64 time=5.629 ms

64 bytes from 172.17.1.1: icmp_seq=302 ttl=64 time=5.433 ms

64 bytes from 172.17.1.1: icmp_seq=303 ttl=64 time=3.489 ms

64 bytes from 172.17.1.1: icmp_seq=304 ttl=64 time=4.038 ms

64 bytes from 172.17.1.1: icmp_seq=305 ttl=64 time=3.452 ms

64 bytes from 172.17.1.1: icmp_seq=306 ttl=64 time=3.230 ms

64 bytes from 172.17.1.1: icmp_seq=307 ttl=64 time=0.838 ms

64 bytes from 172.17.1.1: icmp_seq=308 ttl=64 time=6.041 ms

64 bytes from 172.17.1.1: icmp_seq=309 ttl=64 time=2.030 ms

64 bytes from 172.17.1.1: icmp_seq=310 ttl=64 time=6.555 ms

64 bytes from 172.17.1.1: icmp_seq=311 ttl=64 time=6.455 ms

I'm having the exact same problem on an early 2011 MBP.

I run into the problem when I switch networks. I use the mb in the office on cable and at home on cable.

Normally I never shutdown the MB, so I put it to sleep at work and reconnect to the network at home.

Since I have upgraded to mavericks, switching networks causes the network to become unworkable slow.

The only real solution is to reboot - very annoying.