Hi @JeanetteHonis and welcome to the forum. You should not get buffering but this can be caused by the quality and speed of the WiFi signal being received at the puck and not that being received at the router. This can be checked with the Netflix App (Get help > Check network). The minimum speeds recommended by Sky are as follows:
HD = 25mbps
UHD = 30mbps
HD + 1 puck = 30mbps
UHD + 1 puck = 35mbps
These figures assume you don't have other devices using the Wi-Fi bandwidth.
The important thing with Wi-Fi is to have a stable signal as both Glass and Stream are susceptible to problems if there is any signal fluctuation or interference. For this reason an Ethernet connection is usually better than WiFi as it maintains better stability. If you try an Ethernet connection don’t forget to turn off WiFi in Settings / Network / Advance settings.
If this is not practical then you could consider Powerline Adapters which are about £40 on Amazon. Don’t waste money on a Gb model as Glass and Stream Ethernet ports only support 100mbps.
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