Sorry to hear you're struggling with your connection speed at the moment. I can see a few have suggested the power levels are out of spec, and that definitely looks to be the case when I've done some tests on our end.
I'd like to book an engineer to come and get everything back to normal for you. I'll send you a PM (just click the purple envelope in the top right of the screen) so we can get some details and get an appointment scheduled.
Just to confirm the engineers believe there's an issue affecting the wider area. I've sent this over to our networks team as I haven't been able to find any details of the work being carried out. I'll let you know once I hear back.