Playing Iki Island with the changes the emotional weight. The Eagle speaks a mix of Mongolian and Japanese. Without the pack, the psychological warfare feels generic. With the pack, Jin’s flashbacks (delivered in Kazuya Nakai’s Japanese) clash violently against The Eagle’s foreign tongue. The audio team specifically re-mixed the DLC cutscenes for Japanese audio, so the wind sounds and ambient music duck (lower in volume) at different times than the English mix.
To get the best lip-syncing in Japanese on PC, you may need to ensure the full audio pack is installed through your launcher. Ghost of Tsushima DIRECTOR-S CUT -Language Packs-
The Ultimate Samurai Experience: Japanese Audio & Kurosawa Mode Playing Iki Island with the changes the emotional weight