Hi! My gta iv keeps crashing all the time and i dont know why?! When i start the game and i go to play mp or single player i can play them for 5-20 minutes and then gta crashes. My gta iv runs on default settings, everything is on high accept night shadows are off. My computer specs are nvidia gtx 670 and processor is amd fx-6200 six-core. I dont know why this game keeps crashing, my computer ...