Reply
Highlighted
Tutor
Posts: 8
Registered: ‎2013-04-14

WNDR3400 - Severe decrease in Wifi speed

Greetings,

I own a N600 Wireless Dual Band Router WNDR3400, which is connected to an Arris modem (Comcast).

My service package with Comcast is 50mb download, 8 upload. If I connect my computer directly to the modem or to the router I receive the 50/8 minimally, often hitting around 54. However, the moment I wirelessly connect to my router, at best I receive 13/6.

I've power cycled the modem, 30/30/30 reset the modem, downloaded the most recent firmware, disabled the 5GHz channel, changed my 2.4GHz to channel 11, and have made various other small changes suggested throughout the internet, none of which have fixed the issue. I've tested the speed on 3 various laptops, and all have received the same crappy speeds with wireless but the full speed when plugged in directly.

So, here I am hoping that someone can help me fix this issue. Help?
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: WNDR3400 - Severe decrease in Wifi speed

What is the wireless connection that each laptop is connected at ? #Mbps
VPN Case Study

VPNCASESTUDY.COM

"Our Second To None VPN Related Setup Case Study[/COLOR][/URL]

"One Stop Solution To Your Netgear VPN Connectivity"

*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]





June Mizoguchi-
Tutor
Posts: 8
Registered: ‎2013-04-14

Re: WNDR3400 - Severe decrease in Wifi speed

Each laptop is connected to the 2.4GHz and is getting between 10-13 Mbps download.
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: WNDR3400 - Severe decrease in Wifi speed

I means the wireless connectivity Mbps value not the throughput of the download speed.


Usually wireless icon will shows what is connected at .... 54Mbps, 130mbps, etc.
VPN Case Study

VPNCASESTUDY.COM

"Our Second To None VPN Related Setup Case Study[/COLOR][/URL]

"One Stop Solution To Your Netgear VPN Connectivity"

*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]





June Mizoguchi-
Tutor
Posts: 8
Registered: ‎2013-04-14

Re: WNDR3400 - Severe decrease in Wifi speed

When I hover over the Internet icon it simply says, "Internet Access" beneath the broadcast name.

If I click into it and hover over the connection it says:
Name: Birdledge
Signal Stength: Excellent
Security Type: WPA2-PSK
Radio Type: 802.11n
SSID: Birdledge

If I click into the Wireless Network Connect Status it says:
IPv4 Connectivity: Internet
IPv6 Connectivity: No Internet Access
Media State: Enabled
SSID: Birdledge
Duration: 06:22:41
Speed: 72.0 Mbps
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: WNDR3400 - Severe decrease in Wifi speed

If WiFi device is getting 72Mbps then router is using "neighbor friendly" mode which prevent from conflicting with surrounding WiFi around you

You can try use too like below and see if you can choose best channel -1,6,11 of three ONLY.
http://www.metageek.net/products/inssider/
VPN Case Study

VPNCASESTUDY.COM

"Our Second To None VPN Related Setup Case Study[/COLOR][/URL]

"One Stop Solution To Your Netgear VPN Connectivity"

*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]





June Mizoguchi-
Guide
Posts: 1,134
Registered: ‎2011-11-12

Re: WNDR3400 - Severe decrease in Wifi speed

Try disabling WMM support under QoS to see if that helps. However, your wireless adapter running at 72Mpbs is the issue because you really only get half that speed (or less) in the real world. You need to get that connection rate to 150-300Mbps.
Tutor
Posts: 8
Registered: ‎2013-04-14

Re: WNDR3400 - Severe decrease in Wifi speed

I've used Metageek to choose 11, which is what I'm currently running. Looking at channels 1, 6, or 11, it's still the best score. By disabling WMM my connection dropped to as low as 2Mbps.

How do I improve my connection rate to 150-300Mbps?
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: WNDR3400 - Severe decrease in Wifi speed

WMM is required to to have 300Mbps connectivity

Other factor is wifi adapter driver needs to me updates as well. Some WiFi adapter model is known to connect at 72Mbps as well

Do you see quite of SSID around you?
VPN Case Study

VPNCASESTUDY.COM

"Our Second To None VPN Related Setup Case Study[/COLOR][/URL]

"One Stop Solution To Your Netgear VPN Connectivity"

*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]





June Mizoguchi-
Guide
Posts: 1,134
Registered: ‎2011-11-12

Re: WNDR3400 - Severe decrease in Wifi speed

Ashleydenee wrote:
I've used Metageek to choose 11, which is what I'm currently running. Looking at channels 1, 6, or 11, it's still the best score. By disabling WMM my connection dropped to as low as 2Mbps.

How do I improve my connection rate to 150-300Mbps?


For a quick test, disable all security on the router and connect to your SSID with no security. This will tell you what your speed is capable of. What is your speed now with no security.
Retired_Member
Posts: 0

Re: WNDR3400 - Severe decrease in Wifi speed

jmizoguchi wrote:
If WiFi device is getting 72Mbps then router is using "neighbor friendly" mode which prevent from conflicting with surrounding WiFi around you
http://www.pcworld.com/article/145098/new_80211n_routers.html Could someone please clarify Junes statement? Other than June, Because I am truly trying to understand his statement and cannot figure out why he's saying it. I am trying to understand why he says it's the Neighbor friendly mode when 80211n draft is capable of 144Mbps using only one 20 MHz channel. I am only talking about connection rates. In my network I am able to connect at 144Mbps on one PC and only 72 on another using same OS WIN 7. So if June's claim is accurate how then am I connecting at two different rates from same router within a ten foot radius. Understand this too for some reason the famous inISSIDer only depicts ONE 20 MHz channel being used so what is going on. Did I stumble on a hack without knowing it? No Pixie Dust was used either. Not trying to start a pissing match rather trying to understand his statement. This taken from the above link Unfortunately, the limited bandwidth of the 2.4-GHz range means that just one 802.11n router using channel bonding will take up virtually the entire 2.4-GHz spectrum, leaving no room for neighboring routers, and causing severe interference. For this reason, draft-2.0's so-called good-neighbor policies require that routers ship in 20-MHz mode, and that, when in 40-MHz mode, they drop to 20-MHz operation if they sense nearby Wi-Fi nets or other 2.4-GHz devices. The top link rate in 20-MHz mode is only 150 mbps. June has said many times that the max link rate is 72 rather than 150 (144) From my own experience and after reading this article to me June may be misinformed. Again I am only trying to understand his statement which he quotes several times a week. I am thinking it's rather a wifi card issue rather than the neighbor policy. I would really appreciate the moderators input on this. Thanks
Tutor
Posts: 8
Registered: ‎2013-04-14

Re: WNDR3400 - Severe decrease in Wifi speed

Sabre -
By turning off security, after three tests I received: 9.30, 9.76 and 6.78. Given that those are all lower than with security on, I'm not sure how that's what I'm capable of.

Guchi -
This laptop has a Realtek RTL8191SE Wireless LAN 802.11n PCI-E NIC though I'm not sure how that would effect the other laptops having the same low speeds. Still, I updated my wifi driver and nothing changed. As for as the other SSIDs around me, there are normally 10 other connections at any given time.
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: WNDR3400 - Severe decrease in Wifi speed

Other factor is wifi adapter driver needs to me updates as well. Some WiFi adapter model is known to connect at 72Mbps as well


Stated user should look into driver updates as well
VPN Case Study

VPNCASESTUDY.COM

"Our Second To None VPN Related Setup Case Study[/COLOR][/URL]

"One Stop Solution To Your Netgear VPN Connectivity"

*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]





June Mizoguchi-
Retired_Member
Posts: 0

Re: WNDR3400 - Severe decrease in Wifi speed

jmizoguchi wrote:
If WiFi device is getting 72Mbps then router is using "neighbor friendly" mode which prevent from conflicting with surrounding WiFi around you /
June, A 20mhz draft n channel is capable of connecting @144 is it not? You said above "device is getting 72Mbps then router is using the neighbor friendly mode" that's my concern. Sure, drivers / PC hardware are more than likely the problem but the NF mode isn't even remotely involved in this case wouldn't you agree?
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: WNDR3400 - Severe decrease in Wifi speed


Guchi -
This laptop has a Realtek RTL8191SE Wireless LAN 802.11n PCI-E NIC though I'm not sure how that would effect the other laptops having the same low speeds. Still, I updated my wifi driver and nothing changed. As for as the other SSIDs around me, there are normally 10 other connections at any given time



Speed maybe effected if you are saturated with 2.4Ghzz

10 SSID overall on channel 11?
VPN Case Study

VPNCASESTUDY.COM

"Our Second To None VPN Related Setup Case Study[/COLOR][/URL]

"One Stop Solution To Your Netgear VPN Connectivity"

*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]





June Mizoguchi-
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: WNDR3400 - Severe decrease in Wifi speed

20hz is max at 145Mbps

Doesn't mean you always and must get it

It is up to ....
VPN Case Study

VPNCASESTUDY.COM

"Our Second To None VPN Related Setup Case Study[/COLOR][/URL]

"One Stop Solution To Your Netgear VPN Connectivity"

*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]





June Mizoguchi-
Tutor
Posts: 8
Registered: ‎2013-04-14

Re: WNDR3400 - Severe decrease in Wifi speed

jmizoguchi wrote:
10 SSID overall on channel 11?


These are the current numbers though these change between night and day.


Channel 1:
- Linkscore: 25-30
- Co-channel: 10 Networks
- Overlapping: 3 Networks
- Signal: -48 dBm
- Max Rate: 144

Channel 6:
- Linkscore: 17-30
- Co-channel: 13 Networks
- Overlapping: 8 Networks
- Signal: -48 dBm
- Max Rate: 144

Channel 11:
- Linkscore: 19-35
- Co-channel: 13 Networks
- Overlapping: 5 Networks
- Signal: -48 dBm
- Max Rate: 144
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: WNDR3400 - Severe decrease in Wifi speed

Sounds like you have quite a bit of wireless SSID around you
VPN Case Study

VPNCASESTUDY.COM

"Our Second To None VPN Related Setup Case Study[/COLOR][/URL]

"One Stop Solution To Your Netgear VPN Connectivity"

*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]





June Mizoguchi-
Tutor
Posts: 8
Registered: ‎2013-04-14

Re: WNDR3400 - Severe decrease in Wifi speed

I do, though I'm still looking for help to fix the problem.
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: WNDR3400 - Severe decrease in Wifi speed

Ashleydenee wrote:
I do, though I'm still looking for help to fix the problem.


Overall issues with saturated area not really fixable.

Your other choices are to go 5Ghz band as much as your can or wired the devices.

Reason for 5Ghz has been getting popular and 802.11AC protocol only supports in 5Ghz because of the 2.4Ghz is way saturated by many products including other devices like baby monitor etc that you may not see it in the scanner.

With 2.4Ghz limited in channel you just don't have much options for it.

I suggest to go 5Ghz since you have dual band router. I would get at least one dual band wifi adapter and test out 5Ghz and see if your speed will go up where it should be.

Smiley Happy
VPN Case Study

VPNCASESTUDY.COM

"Our Second To None VPN Related Setup Case Study[/COLOR][/URL]

"One Stop Solution To Your Netgear VPN Connectivity"

*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]





June Mizoguchi-
Retired_Member
Posts: 0

Re: WNDR3400 - Severe decrease in Wifi speed

Your signal level -48 to me seems abit low, Unless you're at opposite ends of your home.

Here's my logic,

I have 3 AP"s active on 2.4 the one in the front room is 20 feet away @-40dbm another one 1st floor about 60 feet along with one upstairs both average - 45dbm. These two are the newer wedge design routers one 4700 and one R6300

You might benefit from updating your router.
Tutor
Posts: 8
Registered: ‎2013-04-14

Re: WNDR3400 - Severe decrease in Wifi speed

searay wrote:
Your signal level -48 to me seems abit low, Unless you're at opposite ends of your home.


I'm literally 4-5 feet away from my Router.

jmizoguchi wrote:
I suggest to go 5Ghz since you have dual band router. I would get at least one dual band wifi adapter and test out 5Ghz and see if your speed will go up where it should be.


Is this something I can purchase from an electronics store? Does it plug into my laptop?
Guide
Posts: 1,134
Registered: ‎2011-11-12

Re: WNDR3400 - Severe decrease in Wifi speed

Yes you can buy a dual band USB adapter at any computer store. Only about $20-30 bucks or so. Check eBay for good prices.
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: WNDR3400 - Severe decrease in Wifi speed

Here is one adapter you can look

http://m.netgear.com/home/wireless-adapters/high-performance/wnda3100/

Any USB Dual Band adapter (300Mbps) will work.

Head to staples or office depot
VPN Case Study

VPNCASESTUDY.COM

"Our Second To None VPN Related Setup Case Study[/COLOR][/URL]

"One Stop Solution To Your Netgear VPN Connectivity"

*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]





June Mizoguchi-
Retired_Member
Posts: 0

Re: WNDR3400 - Severe decrease in Wifi speed

@ 4 feet I have -32dbm switching to 5g will help if the problem is actually caused by other networks.

You should also know that the link score is determined in part by signal level.

USB devices are great and do work, But their location could be a problem when you're not close to the router especially when using 5g.

Laptop antennas are placed in the screen bezel to enable maximum signal into the wifi card. USB are located in the least desirable locations and tend to get in the way when moving the laptop.




Good Luck!
Discussion Stats
  • 28 replies
  • 30178 views
  • 1 kudo
  • 8 in conversation