Slow sky fibre

[Andyb3]

Sky fibre 500. I do get 500 mbps in the room where the router is but in my office next door I struggle to get 50. 
it was better when I didn't have fibre 🤬

[Ali1961]

We recently had an "upgrade" fibre WiFi and things have never been worse. Slow speed intermittent WiFi, poor connection ruin to Netflix. How is that an improvement?