Fincher is famous for using silence as a weapon. In Gone Girl , the absence of a score during domestic arguments creates raw, uncomfortable tension. If the dubbing is poor (i.e., "loose" audio sync), this tension evaporates. High-quality dual audio versions ensure the silence remains silent and the ambient room tone matches the visuals.
Directed by David Fincher and adapted from Gillian Flynn’s best-selling novel, Gone Girl is less of a standard mystery and more of a scathing, pitch-black satire on marriage and media manipulation. Gone Girl—Movie Review - Leonard Maltin's Movie Crazy