If you have subtitles but no voices, you are likely missing the specific language pack files for that region.
The to make your game more stable. Performance mods specifically designed for Cyberpunk 2077. Settings advice for better fps on different hardware. Offline language pack download?, page 1 - Forum - GOG.com cyberpunk 2077 language packcodex
Installing the language pack is straightforward, but it requires careful file placement. Step 1: Download the Language Pack If you have subtitles but no voices, you
Scene release users, language learners, and completionist localizers. Not recommended for: Official Steam/GOG owners (use the in-client language switcher) or those who expect Phantom Liberty content. Settings advice for better fps on different hardware
The Cyberpunk 2077 Language Pack released by CODEX is not a standalone mod or an official Steam/DLC download. Instead, it is a repackaged collection of voice-over (VO) assets, subtitle files, and interface localization data intended for users who obtained the base game via scene releases that initially included only English (or English + one additional language). This pack allows players to experience Night City fully dubbed in their preferred language, complete with lip-sync data for select major languages.