"With great power comes great responsibility."
The G75VWs were designed to be a "more mobile powerful gaming platform." Which means its easier than a desktop to carry to a LAN-party, The "responsibility" portion of the above quote comes into play in the developers' designed use--it was planned that the user would be utilizing this powerful notebook while it was plugged into the charger.
P.S. Reducing your power settings might mean that you can actually connect to & play some online games, but the trade-off will be that you'll probably have to do so with much lower than desired game settings. I know this probably isn't what you were looking for in a response, but it is closer to reality...