Many thanks for your responses I have taken then into consideration.
I do not know if the Sunrise Servers were having a lot of issues lately, as yesterday evening was the worst reception ever, with constant buffering, disconnection of Modem from the internet, No playback etc etc.
So I decided that perhaps as well it may be that my Connect Box needed a good shake up, So I decided to do a complete RESET of the connect box and treat it like it was a brand new installation. So I pressed the RESET button on the connect box after completely removing from the wall socket as well.
After the NEW restart I set the Bandwidth names with their default names and applied a different password and all other setting were set back to their original settings.
When it started up and connect to the TV Box I found the signal strength for each bandwidth to be much higher than it was before. Before was getting around 50% signal strength, but now I am getting around 80% signal strength and since have NOT had any Buffering, Loss of Connection, Low Bandwidth etc etc.
Also I reconfigured my Mesh Extender repeater which is now directly connected to the Connect Box, which also seems to have boosted the signal.
So I think after all that to and froing, I have found a workable solution.
Thanks anyway for all your suggestions and support.