Ill try but not sure what a plausible fix would be if it was that as its not possible to fit a computer near the router
it may not be the powerline adpters but this is the way to eliminate them from being the problem
tried directly into the router for an hour and the problem still persisted, could it be a problem with the router seeing as with the tracert it was taking so long just to connect to the router?
unless you have another router or can borrow one to try you need to phone customer services and see if they will replace the router - should be free if still in contract
first post there is a tracert to bbc
Here is one when its not going slow