Have you restarted the router? If not, try it.
The reason being that you probably got a reconnection at a low speed during the thunderstorms that were around here and you have to restart to recover speed.
If you have done that, we need the router stats as already requested by the Anon poster.
My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost.
Internet connection - IDNet Home Starter Fibre.
Live BQM.
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.