Both your Downstream and Upstream power levels are near the limits of acceptable values, and some of the channels have noise ingress, as shown by the PostRS errors. You will need an engineer to rectify these issues.
The Downstream levels should be between -6 to +10 and Upstream between 34 and 51 by the way.
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Welcome back to our Community Forums! Thank you for your post, and I'm sorry to hear that you're experiencing some ongoing issues with your speeds! I can understand that this can be very frustrating.
I was able to locate your account and see that your upstream and downstream power levels are out of spec and we will need a technician to come over to resolve this problem for you.
In order to have this actioned, I will need to confirm some details with you over Private Message. Please keep an eye our for a Purple envelope at the top right corner of your forum page. I will be in touch soon.