Dragon Age: Inquisition has horrible subtitles. It doesn't subtitle conversations between party members on the field and, when they do appear, the captions are tiny at the top of the screen. If I was deaf, I would be furious that a huge chunk of story content was unavailable to me when it very easily could have been. I miss the content anyway because there's no way I'm playing such a repetitive game without listening to a podcast, but I can at least turn the podcast off when I see the dialogue icon.
Two things:
Character portraits have a speech bubble indicating who is speaking during banter.
Second, you can increase the font of the subtitles.