Low voices in cutscenes

Hello,

I'm playing on a Mac computer, whenever there's a cutscene containing dialogue the voices are really quiet, I can't seem to figure out what is doing it, everything in the sound settings is at default or maxed out but the voices are still barely audible.

I also have a question regarding resolution, I can't seem to use the full resolution of my monitor in FFXIV, I use a 4K monitor and yet the maximum resolution I can use in FFXIV is 2560x1440.
It would also be neat to be able to play in windowed fullscreen mode.