Please let me know if I am missing the point of the combat or tell me how to toggle to real time combat.
I think you're missing the point of the combat. Turn-based games like this one, Blackguards, Shadowrun Returns, and XCOM are supposed to have more in common with chess than Diablo. The gameplay is meant to be tactical, where you carefully coordinate and execute a plan while micromanaging your resources on an attack-by-attack level.
There is no option to disable this and play the battles real-time. To be honest, even if there was the encounters on the maps aren't set to deliver that kind of gameplay. Encounters are infrequent, mainly because the amount of time required to deal with each one in a turn-based combat fashion has been kept in mind. If you could run around and fight real-time Diablo-style you'd probably finish clearing all the encounters in the entire region of Cyseal inside of 20 minutes. Most of these mobs would die in two to three swings.
As for voices, they'll be available by launch. But even then they're limited to the overhead text that appears above characters heads, not the conversations that take place when you're directly communicating with them. All the text to read is pretty standard for role-playing games (like this game and Shadowrun Returns).