Try Nox. Its a bit older now but still a great game. Definitely the kind of high speed fun hack'n'slash that you are looking for. Its a very well thought out game as far as class balance. It should be discounted now too. The game starts a little bit slow but gets really good as it progresses.

Don't write off NWN completely. I didn't like the BG games either, but now I'm already on my second playing of NWN. The pacing is much faster. The combat is not at all tedius like it was in BG. Its a little bit more complex than D2, but no where near as complex as BG2 or Morrowind. I got bored with Morrowing also.