@Dan513 are you measuting speeds over wifi? Run the service checker in the My Sky app and click on the broadbsnd link to find the speed history to your hub does that show a reduction? If it does its likely to be a line issue if it doesn't it is probably an issue in yiur home with the Wi`Fi signal.
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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
