Thanks, @woozle! It wasn't a shared IP, but a device in the house was malfunctioning and DOSing the router. I realised after renaming our VM Hub to the same SSID that the router used caused the same...

I have a TP-Link AXE75 router thata has been working fine since March 2024 in router mode with a Virgin Media Hub 3 in modem mode. However, I've run into internet connectivity issues that I think...