@Mikerhod First vheck thstvthe issue is not with a slow down of the connection to the line shich is simply done by running the service checker in the My Sky app which if you click through will show the connection speed for the last month.
Assuming thst is OK the most likelt problem is wifi interference which can change. A hub reboot causes the hub to find the least congested WiFi channel which can help. Most likely cause is a neighbour's netwirk but any wireless kit can cause the issue so movecany wireless speaker base station, DECT cordless phones etc away from the hub.
=========================================================
65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
