You could check the lease time here Just click on the IPv4 Configuration tab. The default is 1 day, anything higher is unnecessary and could be the cause of the problem
Devices I have are:
BT Internet TV hub which never seems to have a problem with a main hub reset
2x Samsung mobile phones, which also never seem to have a problem a main hub reset
1 x ipad which often but not always requires resetting
Ring security system (5 cameras & doorbell) which often require reconnecting every 10 to 14 days. This is usually for only 50% of devices & I suspect it may be down to the 2 x WiFi boosters I have in the property but after resetting those, sometimes the Ring stuff will reconnect on their own.
4 x Smart TV's which always require resetting; TBH, this is biggest pain of all as the log on process on a Smart TV is mind numbingly tedious & slow!
2 laptops which always require a reboot; also still a PITA as I generally loose all my open tabs!
Surely, a "Full Fibre" internet life should not be like this. I could even link my washing machine & tumble dryer, but I can't imagine why I would want to as I suspect this could create an even bigger hub "auto reset" nightmare!