There are many complex solutions,but something that's easy and could be effective is TCPOptimizer.
http://www.speedguide.net/downloads.php
Download the program and run it as administrator.
After that, you'll want to adjust the connection speed slider all the way to about 30Mbps or so. Then you'll want to go to the bottom bar that has Windows Default, Current, and Optimal.
Choose Optimal, Apply Changes, then restart your PC. No need to touch anything else unless you know what it does. This may or may not help, but it's worked for me.