Ok, so i have an i5 processor with 6GB of RAM on windows 7. System runs fairly well. I am a notorious tab hoarder on my browsers and I have a dual monitor setup with a 19" monitor and a HDMI connected TV for netflix and what not. Whenever I watch videos i get lag issues and more recently I'm getting display driver shut downs. Should I add a video card (currently do not have one) or is there anything else I can do?