While I was goofing around, I encountered a strange bug and I haven't seen it discussed thoroughly elsewhere. During this mission, the dialogue during the battle that normally has voice acting scrolls incredibly quickly, and voice acting seems to be turned off. I was fiddling with the audio settings earlier, so that might have been a trigger for it.

In any case, if this can be reproduced and used in other parts of the game, it could be a huge time save.

Edit: Voice acting for cutscenes seems disabled completely, but it's enabled in my settings, and characters still have voice acting for combat actions in the video above.

I haven't had any luck yet. I got the DLC for myself and, without fiddling with any settings, went into the first mission of Infinite History, and the dialogue bug happened to me, too. It would be incredibly useful, but I don't know how to, like...carry that property out of the DLC and into the main game. I think that mission is just bugged and it's an isolated thing.

I hope I'm wrong, of course, but I don't yet know how to take advantage of it for the main game.