Yeah I have now uninstalled any and all graphics drivers I could find, both Intel and AMD. I then reinstalled the drivers applicable to my computer from the Dell website, and restarted my PC. It didn't work, The Walking Dead was still laggy as even on low settings, as well as every other game I have, so I tried to uninstalling the driver again. After restarting my computer for the second time, it seemed to work. TWD runs perfectly smooth on its highest settings, as well as everything else! I don't know what happened the second time, but perhaps the only difference was that I checked in device manager under Display Adapters that both my AMD card and integrated Intel card were there. I noticed that the AMD card was missing when I had problems, which made me think my computer couldn't see that it was there.... I've even waited a few days to see if problems arose again, but it seems to have fixed itself for good now, hopefully. So thank you for your help DjNDB!!!