Thanks for posting — let's see what's going on.
Are you using a modem/router combo from your Internet Service Provider (ISP)? How many devices are dropping from the network? Also, do you have any paused devices?
Give these steps a try:
If you're using a modem/router combo, set that to bridge mode to avoid double NAT issues.
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.
Remove any special characters in your network name and password.
Turn off IPv6.
Change your DNS server into 188.8.131.52 on the primary and 184.108.40.206 on the secondary server. Hit the save/ floppy disk icon on the upper right.
Unplug the power from your Google Wifi devices for 2 minutes.
If the issue persists, try factory resetting your network.
Let us know how it goes.
Thanks for lending a hand, Jeff.