well, i just tried the 23.11 (released 12/3/2001)driver from nvidia and am experiencing a decrease in performance in other games, but CM works fine, dont ask me how and why this driver is worse, cuz i dont have a clue, but since some other games dont run well with 23.11 ,i went back to the 21.81 driver, dont know anything about this 23.12 driver your talking about, but im curious