Upgraded the youngest from a PS3 (years old but still going strong) to a PS4 for Christmas, and thought it was odd that it took hours and hours for him to download updates. Turns out he is only get about 3.3kbps over wifi! Never had these issues with the PS3, or any other console in the house.
I only get around 30mbps on Fibre (old house in a village) but every other device works fine in any part of the house.
I have tried changing the router settings (Sky Broadband and Hub) but not having much luck. Will Homeplugs solve/help the problem or is the PS4 faulty?