Having Core wirelessly connected can be a problem, which is why it’s recommended to have the Core hardwired to modem/router.
If all your units are hardwired to your modem/router it’s difficult to know if MIKE’s scenario will work…
If it works great. If it doesn’t that will likely be the cause… It’s to do with the number of ‘hops’. Reason is explained well here:
Hopefully Sonore can let MIKE give it a try and return if any issues.