I have a EB810V (from isp) as main router and archer c64 as a satellite for Easymesh through ethernet backhaul. However it is very unstable. With easymesh my wifi is slower even if connected to the main router. What's worse is that often I receive an issue where I am connected without Internet. And I would have to keep switching between the 6hz. 2.5/5ghz and mlo ssid to see which would connect. 

Now I realised that even if it is connected without Internet, I can leave it connected without Internet for about 5 minutes and it would connect.

I'm not sure what exaclty is the issue here. Anyhow can help? It's been frustrating my family that they cannot connect to the wifi