There are many threads about this 2.5 ghz problem on this forum, amazon reviews, etc. I have found no solution with my Archer C5

Are you experiencing this primarily on one or many devices?

hoooverman wrote

Are you experiencing this primarily on one or many devices?

It happens to all wireless devices. (I have 4 wireless devices) When I run speedtests on my phone. I noticed that both the upload and download speeds are less than 1Mbps. And when I try to use my laptop it can't establish an internet connection at all. It's not a problem with the signal or LAN. But a problem with the wireless connection. One quick restart fixes everything and I start receiving full speeds and a normal internet connection. However a few days later it starts acting up again. I looked on Amazon and saw that other people are also having similar issues.

I have problems with my 2.4GHz Wifi slowing down when i have Bluetooth switched on on my iPhone - to the point i just keep it turned off now at home. 5GHz doesn't seem to be affected, it's just the reach isn't as far. Do you have Bluetooth switched on? If so, worth switching it off and testing to see if it makes any difference. I thought it might have just been an iPhone issue but according to Google, it seems this is a common issue affecting many devices (including computers, not just phones.)

Worth a go?

I finally figured out the problem. The Archer C5 v2 has a bug in which it can get stuck on a bad wireless channel. And because the router doesn't auto adjust to a better channel. The wireless connection degrades overtime.


For me when I power cycled the router. My router started on Channel 1. And then after a few minutes got stuck on Channel 11 and wouldn't change channels no matter how many times I rebooted the router.. And from there the more devices that connected to the router. The more the wireless connection degraded. And to temporarily fix this problem. I had to change the wireless setting from auto and manually switch to another channel. (I switched to Channel 6). After switching channels the wireless connection started working fine for all devices again.

Is there a way I can report this bug to TP-Link?

Thanks. It's helpful.