@Dennis34 the most common cause of video buffering is a poor WiFi connection to the Sky hub. You may get away with adding an extender but better is to use an Ethernet cable if tgst is practical. There is a useful network test in the Get Help menu of the Netflix app.
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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
