I have a Amd 2.1ghz quad core, 4mb Ram, and 4870HD running on windows 7 64bit. My game is Crusader Kings DV 2.1beta on high game speed the game runs with a lot of lag, annoying amount of lag. I tried to Google search nothing came up so here is my last resort. I have no clue as to what is causing this lag at higher game speeds or how to solve it.