Combats are usually fast enough for me now but some of them are a pain. The goblins camp inside/outside is what I have in mind but thereay have others I never tried (the zenth hideout, the mushroom lair, fighting all druergar in grymforge... i dont even underdtand why they all dissapear after you kill Nere).
But i cant see any solution other than removing ennemies or bot making them enter the combat at the same time (which would make more sense inside the goblins camp, but not outside).