Brookie

If you're on a business connection try swapping to using a Public IP, this seems to resolve the problem. I *think* the problem is CGNAT, currently most commercial routers don't seem to handle it well when the connection drops. Switching to Public IP eliminates this. We had to switch to Public IP so we could use some port forwarding, when we made that change the connection remained stable despite the occasional lost signal. Draytek 2766, WAN 2 set to Always ON rather than ARP or ping detect. This won't work on a regular account as you can't currently get a Public IP.

Have you physically cut the cable and rejoined it? If so that's the most likely cause of your problems. You can go from the original Ethernet adapter into a switch then use a longer Cat5 cable (or fibre) to make the connection back to the house.