Framedrop when going into battle

[DDorus]

The game runs pretty good, not perfect, but good enough. I can even turn on fancy features like motion blur without too much loss of FPS.

The problem I have is that, when I get into battle with my trusty axe, the game suffers a massive framedrop, usually getting extremely choppy after I smack something, making it hard to do anything for about a second. This usually results in death. Very annoying.

Anyone having the same problems? Chaning some settings around doesn't seem to help much.

Running on a 3000+ X64, 6800GT and 2GiB RAM. XP pro.

edit: I edited after I noticed the "drop" already started before I make the first blow, but it still gets worse when I hit a critter.