I don't know why, but gamers claim a low MTU helps with pings, I tried it and it doesn't work and it slows your line down.
Your MTU should be 1500.
Use
DrTCP to change your MaxMTU to "1500".
I'm you are getting packet loss, you should lower your RWIN since it helps cut down on it.
Try putting it at "16876" with DrTCP - hit "tab" - click "apply" then reboot your machine.
You should also uninstall all @home software since it really slows you down as well.