For me, at least, it's the fucking bad audio. So goddamn often the sound makes someone difficult to understand so I watch most things with subtitles.
I don't have to do that with games. Why? Because I get separate volume sliders for music, sound effects, and speech. Trouble understanding just means I need to adjust those to make the speech louder over music and fx.
Why in the hells tv and movie audio tracks don't have this separation I don't understand at all.
When watching The Expanse on Prime Video, some episodes have an option to select an audio channel with boosted dialogue. Pretty neat feature but unfortunately not for every episode, inexplicably.