It might be worth doing a factory reset on the home hub, but if you have any digital voice handsets paired to the hub, then backup the numbers first.
A common problem with all of the home hubs, is that they run out of internal connections if you have any devices that use a randomised MAC address, sometimes called private addressing.
Each new MAC address takes up another IP address, and soon you can run out of connections. You will see lots of "Unknown device" entries on the home hub network map.
A normal restart can help for a while, but only a full factory reset clears out all the old entries.
If you have any devices, both wireless and Ethernet, that have MAC randomisation turned on, then turn it off so that only the device MAC address is used. That will ensure only one IP address is allocated for that device.
Then do a factory reset, and see if the problem returns.
