Wifi Issues - Full signal but high latency!

[Stuaz]

I have an issue with my WiFI setup which I just can't work out.

I have a BT Homehub 2 - its recently been replaced in a hope to try and resolve the issue.

I have a number of different WiFi devices that when connected they show good signal strength however I cannot resolve websites. I can navigate to any locally connected devices - for example I can access the router.

If I ping from these wireless devices I am getting packet loss of over 70% and ms of over 5000. I have to disconnect the devices from the wifi and reconnect them. They will then work fine for 10 minutes and then the same problem occurs - high latency.

Its worth noting when this happens NONE of my hard wired devices exhibit any issues.

I have tried a different router supplied by BT, I have tried changing the WiFi channel.

Not sure what else to try so looking for some suggestions!

[rbz5416]

If you haven't already, I'd start by splitting the 2.4 & 5GHz bands onto different SSIDs & see if the problem exists on both. That will go a long way to quickly ruling out local interference.

When you changed channels, did you use a WiFi analyser to check for the least congested channel?

[Stuaz]

Thanks for the response. I actually have a home hub 2 (I will update my original post when I said 6) which i dont believe I can split the channels.

For finding a new channel I just let it do a search through the router web interface to find a channel.

[rbz5416]

No, the SH2 can't split WiFi bands but you can turn them off one at a time. So with the 2.4GHz  turned off devices will have to connect to 5GHz, assuming they're capable.

I wouldn't rely on auto channel selection. Download a WiFi analyser to see what other networks are in the vicinity & on what channel. You can then manually select the clearest channel. On 2.4GHz it's best to stick to the main channels of 1, 6 or 11.