Since this is a REMUX, it likely contains multiple audio tracks (the original English Master Audio and the Polish track). You can toggle between these in your player's "Audio" menu. If the Polish subtitles aren't appearing automatically, check the "Subtitle" track settings.
Apps like VLC , MPC-HC , or IINA (for Mac) handle these large files best.
Ensure your drive is formatted to NTFS or exFAT . Older FAT32 drives cannot hold files larger than 4GB. Audio & Subtitles