Hmm... ok... Is it just my impression or do most of the people who think "combats are fine / exciting" have rather physical-heavy (str/dex) parties while the ones who think "combat is boring / slow" have rather magic-heavy (int) parties?
I mean, I already had the suspicioun that mages might have a rather too high survivability and too low DPS in endgame (I thought it would be the opposite and took 2 mages specificly because I wanted to have fast but hard/dangerous combats and in early game it seemed to work out exactly like that
)... but how extreme is the difference?
If your party is mage heavy, than yeah, this might be the reason. Resistances of some enemies become very high across the board and you need to either significant reduce them or have a significant source of physical damage for your mages. Teleport helps, but is still a spell with some cooldown, summons are nice, but do very little damage, etc
So the game becomes sometimes rather slow if your mages are the main source of damage in your group.
Similar can be said about piercing damage and all the skeletons at the beginning of the game. Dex based characters look super-weak because of this, while they actually do immense amounts of damage once that -75% damage penalty becomes uncommon on enemies.
