Wifi droping out - online help not usefull

[Breeze66]

I have Sky broadband and a Sky Q  box the Wifi fall off a cliff in the next room to the Sky Q box . Litrally works fine two steps into the room and then any device used past this point looks to have a good connection but  everything takes ages to load . ( having issues with a TV , Mobile Phones , google devises even my Ring door bell) i have followed all online advice but get no improvement. The advice just sends me round in circles. When calling the calling the help line it sends a link that takes me back into the same advice lop and aslo tells me its easy to report an issue online which i cant find. How do i get support ? 

[Chodley]

Did you connect your mini to the Q or the router when you set it up?

What are the walls made of?

[Breeze66]

I dont have a mini just the Qbox  connected to the router. the deviding wall between the two rooms is brick but only two doorways and no more than 5m from Q box ( not as crow flys)