I was just a little hard to understand how to balance the sound in my way, to realize that it is a balance system.
It starts at 50% for the game, 50% for voice and support either the joystick or the character to add 10% on one side (and thus make 60% - 40%) and so on.
Once understood, excellent product.
CAUTION: Turn your controller up to date in the console settings by connecting cable directly to the console.