sounds like it has a slight memory leak.
that jives with what I am seeing on task manager... the longer it runs, the more memory it eats up, even if you are just standing in one spot, doing nothing, and have alt-tabbed out of the game.
you can watch the memory slowly increase in usage by about 4kbytes/sec or two. it's possible this is precaching data for when you do finally move, as i see very little stuttering in game as you run around, which is good. OTOH...as you note, the game does seem to perform better with a restart every once in a while.
