I have a Intel mini nuc 8th gen Core i3 processor. connected to fibre broadband and remotecontrolled through google wifi. Always problems in connection. Often I plays through my Volumio instead. But I want to play through my ROCK also, Please help me!
Do you have multiple subnets set up? I would check to make sure that you Core and Roon Remotes have the same IP address except for the last 3 digits, e.g. 192.168.8.XYZ.
If the IP address is different except for the last 3 digits, that would indicate that you have multiple subnets set up and this has to be corrected as Roon cannot communicate via different subnets.
If you have a modem/router combo box that also provides WiFi, I would ensure that the DHCP server on it is turned off and that there is only one router handling the DHCP assignments.