My laptop uses Nvidia Optimus. It just had a GPU driver update. The update allowed me to choose the 'primary graphics device'. I changed it to the discrete card and ran WEI again. My WEI went up to the same score for desktop graphics as gaming graphics was. A very nice increase in the overall WEI score. But, you must realize that doing that will seriously affect your battery life. It does not affect me since mine is usuallt plugged in, but it may affect others. The WEI score really does not matter as long as your computer is operating as you like it to. But, editing the XML file is not a correct answer. WEI is not and was never intended to be a performance indicator. But it serves a purpose to tell if something is wrong with a particular component of your computer. It does have a purpose, but is not a performance test.