Thanks for taking the time to post on the community.
Sorry to see you are experiencing slow broadband speeds during the evenings.
Looking at your connection, there is a high peak time traffic fault in your area which is causing slow speeds. The reference number is F003933493 and has a review date of 29th March.
I did also notice that the downstream power levels are too high at +13 dBmV and I would like to arrange an engineer appointment to adjust these for you. I've sent you a PM which you will find by clicking on the purple envelope icon in the right corner.