After I installed DD-WRT everything worked fine. I was able to play games with people on my network. Couple days later I found out that it started lagging when I play with my brother on StarCraft. So we uninstalled DD-WRT Linksys Firmware and then flashed it back with the Linksys Original Firmware except the latest to see if it fixes. And it still lags. My brother already have the ports forwarded on his computer (off http://portforward.com/) And did all the settings it told us to do. Edit: Could it be something to do with our Static IP? Still lag, any solutions?