Thanks for posting and a warm welcome to the community.
My apologies that you are experiencing slow broadband speeds. I know how frustrating this can be.
From checking your connection, there is a high peak time traffic fault in your area which is causing slow speeds. Our networks team are investigating the problem and are improving bandwidth and performance to help with this issue. The reference number is F004609666 and with a review date of 28th December.
As this will impact your connection during peak hours, do you get these speeds outside these hours?