Here is a link to dslreports.
http://www.dslreports.com/tools
Take a look at the tweeks tool.It might suggest some receive window and mtu changes that might improve your speed.
This is from a prior Johnwill post.
It might prove useful to have this data also.Might give us a better picture of true line quality.
I am not an expert at reading this data,but other techs here have that expertise.
Register at DSLReports and run their Line Quality Tests. It's best to run this test with a direct wired connection to eliminate any wireless issues from the results. It's useful many times to run this test several times, and we'd like to see each of the results. Post the results link from the top of the test display page for each test run here.
The link to post is near the top of the page and looks like:
If you wish to post this result to a forum, please copy/paste this URL
http://www.dslreports.com/linequality/nil/2357195 <- sample only, yours will obviously be different!
and your IP will be disguised.
Copy/paste that link here.
Note: You will have to enable PING (ICMP) request response either in your router (if you have one), or in your computer's firewall for direct modem connections. This is very important to get the most important part of the test to run.