Very poor wifi despite excellent signal

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lunermac

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Nov 27, 2013
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I have recently made an upgrade to Fibre and received my new Dual-Band VDSL modem router combo (Talktalk HG635). Upon doing a speed test via Ethernet connection i can see I am getting top end up and down so I am very happy with that!

However not a singal device connects wirelessly without major problems despite my previous router having no issues at all, these are the symptoms:


  • Wifi drops connection randomly despite having full signal to device.
    Wifi signal drops down significantly even when directly next to router.
    Pages take a very long time to load / not at all despite having full signal.
    Sometimes cannot connect to router at all despite having correct credentials and full signal.
Here is what I have tried:

  • Disabling the 5ghz band as none of my devices utilise this.
    Changing the SSID of both 2.4ghz and 5ghz so they do not match.
    Experimenting with different encryption and wireless protocols to see if bandwidth is an issue.
    Disabling 40mhz from 11n bandwidth (I had to do this anyway as network analysis reveals major overlap of other networks in the street with this function enabled, no matter which channel I have selected)
    Changing the router channel to 1 as network analysis reveals this to be the best in terms of least interference (I know this already as I have experimented with previous router)
    Disabled / enabled WMM (QoS) at both the router and wireless adapter.
    Forced 20mhz option on wireless adaptor.
    Disabled other devices that operate on the 2.4ghz band.
    Moved router to central location in the house so full spectrum of signal is achievable (coincidentally the same location of previous router where signal was fantastic before)
    Reset router and adapter, flushed DNS and ran Windows Diagnosis tools, all to no avail.
    Lowered roaming aggressiveness on wireless adapter.
This has me completely baffled. Its such a shame as this is the final step and I am really looking forward to my new service with my ISP. I am happy to provide any information requested, however I worry that a phone call to my ISP will result in a list of generic steps that I have already tried.

Any help greatly appreciated guys!
 
Solution
B
You need to leave wmm on even though it is a pretty worthless feature. Any device that enforces the 802.11n standards will not connect at the higher speeds.

Some routers just do not provide good wireless even though in theory they transmit at the same power levels and many times use the same chipsets. This unfortunately is the reason you get mixed reviews of any router on the market. They just do not match with some houses.

So if you still have your old router. Disable wireless completely on the new router. Use your old router as a AP only. This should in effect use the radios on your old router that worked well in place of the radios on the new router.
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digitaldoc

digitaldoc

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Oct 31, 2003
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Well, you covered all the bases. I would also disable any Guest network that is setup.

When you call your ISP, which is your next move, when I get the generic advice, ask nicely for the next tier of tech support. They tend to be a lot more knowledgeable, and can get beyond the level of rebooting your modem, and plugging in your Ethernet cord, etc. As an aside, when I call my ISP (Optimum cable), now the 1st tier is an automated robot that is quite generic, and I just have to keep saying "AGENT" until a get a live person.
 
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bill001g

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Aug 9, 2012
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You need to leave wmm on even though it is a pretty worthless feature. Any device that enforces the 802.11n standards will not connect at the higher speeds.

Some routers just do not provide good wireless even though in theory they transmit at the same power levels and many times use the same chipsets. This unfortunately is the reason you get mixed reviews of any router on the market. They just do not match with some houses.

So if you still have your old router. Disable wireless completely on the new router. Use your old router as a AP only. This should in effect use the radios on your old router that worked well in place of the radios on the new router.
 
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Skylyne

Skylyne

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Sep 7, 2014
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Agreed. Some routers just suck; it's kind of like getting a lemon. If you can't easily exchange the new router for another one, I'd use the old router as your AP, and hard line it into the new router acting as your modem.
 
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