i have 40 meg fibre provided by plusnet using an ethernet cable from a pc into the router. All good with the PC and other wifi hardware. When i plug another pc into the router via an ethernet cable the speed drops to 1mb on both PCs. The wifi stays normal, sometimes, other times that drops aswell. i updated the drivers to the network cards etc and had the line tested which is good. Is this the router?
i would also note that the speed drops from 40meg to 1.5meg every 24hrs so i have to restart the router.
thanks in advance