Periodically sags channel speed and Wi-Fi signal strength on a laptop

The best solution in this case is, of course, switching to the 5 GHz band. So the speed and stability of the connection will be higher. Perhaps the 2.4 GHz band is very busy with neighboring networks. This can greatly affect the speed and stability of a Wi-Fi connection on a laptop. But for this you need to buy a new router.

In the screenshots, I noticed that your laptop uses a channel width of 40 MHz for the connection. From my own experience, I can say that this can be the cause of an unstable connection and constant drawdowns. Especially if there are many neighboring networks. Even though the speed should be higher compared to 20 MHz.

What can be done:

  1. In the Wi-Fi network settings on the router, set the channel width (Channel Width) to 20 MHz. Save the router settings, reboot it and connect the laptop.
  2. In the device manager on the laptop, in the properties of the Wi-Fi adapter on the “Advanced” tab, find the “Channel width for 2.4 GHz” property (802.11 n channel width for band 2.4GHz or something similar) and set the value there to 20 MHz. Screenshot for example:
    Changing Wi-Fi Channel Width Settings in Windows 11It is advisable to check the result after rebooting the laptop and router. I think this should help.

If this does not help, then try experimenting with the Wi-Fi network channel settings on the router. Here you may find this instruction useful: how to find a free Wi-Fi channel and change the channel on the router.

You can also try turning on the “Maximum performance” power mode in the power and battery settings in Windows 11. In the settings. Section System – Power and battery.

See also  Login for Compaq WiFi Router

Asked by: Ilya