Thanks for working with us on this @Andrew_Webb – I know this troubleshooting has gone on longer than we’d like.
So, I’m still focused on the network here, since if there was a problem with your Core or storage, I don’t think this would be the case:
Since the issue only happens with wifi involved, I think we want to continue troubleshooting in that direction.
Is this still the setup you’re running? Are all devices running DHCP? And addresses are being given out by the Orbi?
Assuming I have that right, I think it would make sense to try running with the Core, the Orbi, and the Airplay devices – turn the satellites off completely.
Also, is the Orbi running the latest firmware? I know this is annoying, but have you tried resetting the Orbi to stock settings? We’ve had issues like this in the past where weeks of troubleshooting came down to an option someone checked off during setup, so it might be worth trying this with 100% “vanilla” settings, to see if that yields any change.
Thanks again for your patience here Andrew – looking forward to getting this resolved for you soon!