I just bought a new computer. Dell XPS w/ Intel i7 processor 2.7-3.4Ghz, 8GB RAM, Nvidia gt555M graphics card with 3GB of RAM and Optimus. I should be able to play Half-Life 2 on high settings no problem. However, whenever I get into a situation on the game with someone shooting or anything happening the framerate goes down to below 10! I tried changing the graphics settings to low on everything but the same thing happened again. Why is this happening? I made sure the computer wasn't using the Intel HD graphics card, but it was definitely using the Nvidia so I don't know what could be causing the problem. Does anyone have any ideas? (Also I tried playing the original half-life and it still lagged *********.)