After reading the last part of your post, and being a person who experiences frequent short dropouts with his connection, I looked at my noise safety coefficients numbers. They are 6.9 and 6.2 respectively. By your metric this might be my issue. Have you any idea how this might be addressed and rectified, if at all?
Welcome to the Community!
Using your community details, I checked your account to find out if there's a possible line issue affecting your service.
Based on the tests I performed, we detected specific dates where your connection has been unstable. This may need assistance from NBNCo to check the line. I have escalated this issue to our Engineering Team for further assistance.
Expect to receive updates from our Engineers regarding the escalated ticket in the form of SMS or phone call.
If you have questions or need clarification, let me know.