If wireless, try wired directly to the hub with a Cat 5e cable or better with a device equiped with a gigabit ethernet network card. I would test tne speed during the day and again during evening peak times to check for a possible utilisation issue.
Welcome to the community and I'm sorry to learn you're experiencing issues with your broadband connection.
I have located your account and there is currently maintenance work being carried out in your area to support the increased demand for our services but I can also see that there are some signal issues with your box which could be making this worse so I would like to arrange for a technician to take a look at this for you.
If you click on the purple envelope at the top right of the screen you will see another message waiting for you with further information.