@DK61061 if you phone line is using the conection on the hub if the connection goes down so does the phone line and streaming will stop. The lights on the hub will tell you what is happening see https://www.sky.com/help/articles/hub-lights-explained-start
However poor streaming video is very sensitive to poor wifi signal from the hub to the TV so that msy also be part of the issue.
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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
