I played for about 18 hours with the game running very smooth. No crashes, or stutters (other than the normal periodic saving stutter). I logged in the next day, have done nothing to change my computer, did not change any game settings and was getting stuttering before I even made any changes to the game from the night before. Now the game has a 1-2 second freeze every 18-25 seconds or so. It does not come in spurts and does not seem to be affected by having ten mobs around me, or by anything I am doing. This ranges from annoying when I am just running around to a real hindrance when I am say fighting a troll. This seems to have been an issue for awhile and though I was enjoying the game, it may turn me off from playing much further if it is not dealt with.