All my WiFi points have a weak connection at the same time every 3 weeks or so

[Bildar]

I found this issue in another thread that has since been locked. 

About every three weeks, after having green/excellent connections for all three Google WiFi points, they will simultaneously drop to yellow/weak. I notice it when the quality drops while watching streaming video.

The only solution I've found that reliably works is to reset my router (unplug, wait 30 seconds, plug back in). This solves the problem for about another 3 weeks. Is there a permanent fix for this issue?

I have a GreenwaveC4000BG modem from CenturyLink. One puck is wired to that router, the other two are in other rooms in the home, wireless.

Thank you.

[Apsilon778]

A reboot every 3 weeks is actually not a bad thing to do in terms of the amount of network clutter that can build up over time.

You could also add an additional point if this is chonic or do wired backhaul. I would recommend rebooting from the app so the point stay in sync and the mesh test is done when all points are up and ready. 

For the other two points ensure they are raised and on a table of some sort, do not have them on the ground or hanging on the side of a wall. Even a few feet can make a big difference. 

[Bildar]

Thank you for the response. I tracked the time between occurrences, and this time it only took five days from modem reboot to all three Google Wifi points having a weak connection simultaneously.

All the points are raised off the ground and typically have excellent connection status.

This issue seemed to start when I upgraded my internet service and changed to a new modem. However, when I do an internet speed test, I get a consistent result that matches my contract, even when the wifi points switch to weak connections. 

I'd hate to think the solution is to reset my modem every five days. Could be a setting with the modem itself?

[Apsilon778]

If the points typically have excellent connnection and thats the typical state they hold....I see little reason to investigate further. You could add another point if you like, but this likely is a software issue throwing a warning when it shouldn't. 

The only way a "modem" would interfere with a connection is if that "modem" is actually a gateway where it has a router intergrated into the system.  Traditionally a modem doesn't feature any form of wireless connection and acts as a bridge between the  internet and the router. I don't know how an increase in bandwidth would impact an internet mesh network....if you find a way how this could interact please let me know. If the "modem" you have has another wireless network running , consider disabling it. 

[Bildar]

Sorry, yes, my modem is also my router.

The issue is that the signals don't just switch to "weak," it also severely hinders internet usage. Streaming video, for example, lowers in quality all of a sudden or cuts out completely (though speed tests still show I'm getting the right speed to the house).

[Apsilon778]

Would advise disabling the router functionality and ensuring the gateway (modem router combo ) is properly configured and bridged to the google wifi network. 

[Apsilon778]

Recommend googling the procedure for your gateway to be configured , this is typically offered by the ISP. 

[Apsilon778]

Oh and just to add....be sure disable WPA3 on the google wifi....tends to cause more trouble than it solves.

Here is a link to the procedure , is this a DSL or cable connection?
https://www.centurylink.com/home/help/internet/modems-and-routers/advanced-setup/wan-settings.html

[Bildar]

I'll look into that - thanks for the link! I'm on DSL.

[Apsilon778]

I know this is a bit off topic and idk how much you are paying for internet at your home or if they are offering it.....but I know AT&T and other cellular providers are offering service with at home wifi from which out performs most DSL connections. If you have a strong signal through a provider....I would consider one of their offerings.