Open your Network and Sharing Connections. Go to Local area connections and then Properties.
Then (Un-check)
QoS Packet Scheduler.
Link-layer topology discovery mapper I/O Driver.
Link-Layer discovery topology responder.
Then hit ok or apply, then re-log.
I also make a few (safe) changes to the Network Card Setting, I use an onboard NIC.
Again or if your already there > Open your Network and Sharing Connection > Configure Tab > Advance.
Disable > Interrupt Moderation ( I also disable Flow Control, but it isn't necessary)
If the changes to these setting causes any problems just revert them back.
Also there is a handy program called TCP Optimizer, that you can download from speedguide.net that can also help.
Enjoy.