I doubt most of the people here have even played BG2! Or if so I on easy difficulty with story mode engaged.
To the guy above, in BG2 the tactics are way beyond dos2 during a fight. The depth comes by countering enemy casters and their protection spells while buffing your own party then hitting them with de buffs and heavy hitting spells, all while you are trying to tank their most powerful melee with your own and trying to get your thief to back stab an enemy caster and ranged to pick off the weak. All with in the space of a few minutes. Obviously pause is heavily required, some BG and IWD set pause at the end of a turn which is every 6 seconds.