@Dazlad6
It's a WiFi signal, so subject to attenuation when passing through building materials. A single layer of plasterboard (for example) shouldn't be an issue unless the connection is already marginal.
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Sky Glass 55" (on ethernet) & two Stream Pucks (one ethernet / one WiFi)
BT Halo 3+ Ultrafast FTTP (500Mbs), BT Smart Hub 2
