@Jasiczak81 check if the issue is a slow broadband tonthe hub by running the Service Checker and clicking on the broadband link see No connection or slow WiFi | Sky Help | Sky.com | Sky Help | Sky.com
If that is not yhe issue its likely to be poor WiFi in your home especially if you stream video. Sky will sell you an add-on https://www.sky.com/help/articles/sky-wifi-max which can supply wifi extenders if they are required or you can buy your own kit.
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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
