Why are you trying the Matriarch fight as level 2, even? First times I played BG it was quite dificult, but those encounters I found hard then are easy now. Even minotaurs or the Bulette are not that big of a challenge. The most difficult fight in the entire EA is the Githyanki Patrol (that one is still very hard after 200 hrs of gameplay) and the Matriarch Spider.
I find it refreshing that there are difficclt fights where you have to think carefully about the use of potions and skills. I almost never use environmmental stuff to win the battle and that Dror fight isn't all that hard to fight out normally. It's not reasy but it's marely a reasonable challenge if you know how to build and equip your characters. But of course it helps that I have played this EA through so many times.
Howeve,r there will be a difficulty slider when the game relases, so I really don't see the problem here.