I think the issue that all of us are having is the Google Router is NOT
able to manage BOTH Routing & Mesh network. Connection seems to degrade
over few days.
I have the exact same issue. Once I reboot, everything works fine,
otherwise after 1-3 days, the connection degrades to 1-5Mbps (from
300Mbps)If they added schedule reboot option, that would be awesome.