Okay first of all let me say the beginning of the game is amazing. Juste played 3 hours straight and the pacing is much better than i nthe first DOS, where you had so.many.dialogues early game before real fighting. In DOS2 it's much more balanced between fighting and talking, at least for the beginning.
Then, I encounterd my first bug : When trying to teleport elemental bulbs at some point of the game, the lightning effects are too much and make the game/computer freeze.