Our FREE software monitors your Internet service and provider and can alert you to connection issues or downtime. For home, small business, IT companies and enterprise. Monitor Internet outages, track network connection reliability, and get proof you can use. For Windows 7, 8, 10, Centos 7, 8, Debian 7, Ubuntu, ARM (Raspberry, Tinker Board, etc).
If you are paying for 80 download, then you have the setting correctly entered and from what I see, your average speed is 43.39 Mbps based on around 24 tests.
It is consistently this rate so either something is using up some of your bandwidth and you're not aware of it or you are getting a bit over half of what you are being promised.
Also, your upload speed seems to average around the 12Mbps also quite consistently.
Other than finding something on your network that is using up bandwidth you're not aware of, then it appears you're not getting what you are paying for. We always suggest finding a neighbor or two that would be willing to install and comparing results.