Connectivity issues experience with Google Wifi and Xfinity in new home

[comGP]

I just moved to a new home and setup our wifi and have been experiencing continuous connectivity issues. 

Here's my setup. 

Xfinity XB8 gateway with 855Mbps internet.  In addition to the modem it has a feature act a router. 

Google Nest Wifi (not pro) hooked up to the gateway through Cat5 ethernet cable. This is my primary wifi router.

I have 4 additional Wifi hubs through the house. 3 Google Wifi devices and one Google Nest Wifi (with voice assistant). Each device is a maximum of 20 feet away from the nearest device. I have 2 on each floor and 1 in the basement.

Below is the list of issues I am experiencing

1. While the wifi network stays up, the internet connection will periodically go down ("you are not connected to the internet").  The Xfinity wifi will not show any interruption to internet service
2. 1 or more of the hubs will randomly go "offline" reducing internet access to the devices connected to it.  There is no rhyme or reason why the device went offline. Google home app offers no explanation.  Only option is to remove power and restart
3. While the hubs are all up, the internet speed will deteriorate to unacceptable levels (<3 Mbps) causing interruption to work like getting dropped from meetings, unable to refresh mail etc. Minutes later the speed will be back to "normal" (>30Mbps in the basement ~= 100 Mbps in other rooms). This will happen about a 20-25 times during the day making the internet setup unacceptable for any purpose 
4. Normal speeds with the google wifi are significantly slower than the speed with the Xfinity Gateway Wifi Router (500-800 Mbps).  It's about 100-200 Mbps if I am in the same room as the primary router; about 30-120Mbps in other rooms depending on how far we are from the primary router.
5. Google Home App. Really useless. Misleading status - it will show a status of "Great" for the Wifi when 1 or more hub points (sometimes all 4) are offline. Will show things like "Blazing speed - 855Mbps" for internet when the actual performance I am getting is <5Mbps.  No help troubleshooting any issues.  No notification of loss of internet or devices going offline. 

In my old home, I had an almost identical setup of google devices. Only difference was a smaller home and the provider was google fiber.  We had very few issues (except #5 above). Could it be that there's a compatibility issue with google and Xfinity?  I have tried switching the primary router from the Nest Wifi to one of the Google Wifi devices. No real change. 

At this point, I am seriously considering buying a couple of XFi pods and throwing away all my google devices.  

[wcsau]

Experiencing the exact same issue with same Nest Wifi hardware (not pro).  Google Webpass as ISP.  In the last 48 hours, I have had to reset/unplug networks over 10+ times.

[brokenblinker]

I am experiencing the exact same issue. Google WiFi with 2 additional points. Internet drops while wifi network is still up. Resetting (very) temporarily solves the issue.

[Dynomite2910]

I have been having issue #1 for a year now off and on and I'm just about done with these Google Wifi devices.

But here is the crazy thing, it seems like the problem is definitely with the Google devices in particular the Nest Wifi Router device I have connected to my TC4400 cable modem (Ottawa CA/Teksavvy) but I have almost the exact same setup at my cottage connected to a Starlink setup and I NEVER see this same problem happening there. 

So I feel like although I have come to the conclusion that it is a problem with the Nest Wifi Router, that it doesn't happen to everyone. It does have something to do with modem/ISP setup you have. Like there is something about it that the Nest Wifi router can't deal with and makes it go offline.

I'm stumped and just about ready to throw them all away.

[Dan_A]

Hi folks,

That certainly isn’t the experience we want you to have, and we apologize for the delay. A few questions: are you using a modem/router combo from your Internet Service Provider (ISP)? Which Google/Nest router are we working with?
 

You may also try to do a sequential reboot of your entire network and see if that helps.

or

Please perform a 2-minute power cycle on your entire network to re-establish the connection on your connected devices. Here's how: 
 

1. Disconnect the power from the modem.
2. Disconnect the Ethernet cable and power cord from the parent point.
3. Disconnect the power cord from the child points.
4. Leave everything unplugged for 2 minutes.
5. Connect the power cord to the modem then to your router and points.

Also, you can give these steps a try:

1. If you're using a modem/router combo, set that to bridge mode to avoid double NAT issues.
2. Make sure that there is minimal to no interference (concrete, bulletproof glass, metal, mirror, etc.) and the points are no more than two rooms apart.
3. Remove any special characters in your network name and password.
4. Turn off IPv6:
5. Open the Google Home app Google Home app.
6. Tap the Wi-Fi coin  and then Settings Settings. 
7. Scroll down and tap Advanced networking.
8. Scroll down to IPv6.
9. Toggle the switch off Toggle button off.
10. Change your DNS server into 8.8.8.8 on the primary and 8.8.4.4 on the secondary server. Hit the save/ floppy disk icon on the upper right.
11. Unplug the power from your Google Wifi devices for 2 minutes.
12. If the issue persists, try factory resetting your network. Take note that this will delete all network data.

You may skip any step that you’ve done already.

Let us know how it goes,

Best,

Dan

[Dynomite2910]

Thanks for posting your stock answer to this problem @Dan_A 

If you had read my post, you would seen what ISP (TekSavvy Cable Ottawa/Modem(TC4400) I am using and that it not a modem/router combo. It only works in bridge mode.

If have tried ALL of the steps you have posted many times in the past and it never solves the problem.

[Dan_A]

Hello Dynomite2910,

I understand, and I apologize for the response. I was also sending the message to everyone on board.

Since you’ve tried all the steps, we'd like to take a deeper look into this for you. Please fill out this form with all the needed information, and then let me know once you're done.

comGP, wcsau. brokenblinker, could you confirm the status of your Wi-Fi connection? Have you tried the steps above? How was it?

Keep us posted.

Kind regards,

Dan

[Dan_A]

Hello again Dynomite2910,

We haven't received your form. Have you had a chance to fill it out?

Thanks,

Dan