For me it's some choppyness when scrolling that's the real problem though, which I had even with EU3 but CK2 is free from it, although all of them use Clausewitz. I have a 2GB GeForce 520, so that buffer is helpful but apparently still no cigar. I'll give it a try later on to see if the gods are with me, and if not I can always drop by on monday to buy a new graphics card if the full game continues to display the problems.