Hard to understand dialogue

Rating: 2/10 (27 November 2017)

(NB I'm watching the movie on TV from a DVD, with computer type speakers, not a home entertainment sound system)
Another movie, where actors (mostly male) mumble and whisper, making the dialogue hard to follow. It's like they have lowered their voices too, and are speaking in a way that isn't "normal".
If I turn up the volume, I'll eventually get an explosion of loud sound effects. So not conducive to watching at night, when others are sleeping.
As a consequence of having difficulty understanding what the actors are saying (especially Matthew McConaughey), I found the movie dull and boring. And I'd probably add that it's too long.