As an engineer I know that when a system is setup to work within a range, whether that be movement, pressure or voltage the ideal setting is the mid point between the lowest setting and the highest setting. I know we cannot always work at the 'ideal' point but the settings must be kept away from the limits.
My Upstream power levels are always hovering just shy of the upper limit meaning that any kind of twitch / problem in the outside circuit has major effects on my broadband.
As you can see from this thread, the problem has already been notified.
I can see that an engineer would be needed to fix this for you, I need to send over a PM to pass account security, then we can get the engineer visit booked for you.
Well, I got a call from the engineer just before 08:00 saying that she was at the street cabinet checking things out and changing the 'Tap' for my broadband & TV.
That done she came to the house and had a general check of the indoor circuit, she changed the 2 indoor splitters and put new end fittings on the cables. She then did noise checks from the Hub3 to the street cabinet and said it was very noisy. She then checked from the first splitter on the indoor circuit back to the cabinet with the the same very noisy result.
Next was outside to the T (triangle box in the pavement), she lifted the little cover and the hole looked be blocked solid with dirt but it actually turned out to be a lump of silicone sealant the size of a tennis ball, once that was out of the way it was evident that the cable had been repaired inside the box.
A re-pull has been arranged for sometime on Monday. I am happy that a tangible problem has been found and hopefully once the new cable from the cabinet has fitted the problems will be gone.