ChatGPT: 1. Check Subtitle Encoding Go to: Settings → Playback → Subtitles → Subtitle encoding Try setting it to UTF-8 (the most universal). If it’s already UTF-8, test Western (Windows-1252) or Central European (Windows-1250) depending on your language. 2. Change Subtitle Font Corrupted or incompatible fonts can cause this exact issue. Go to: Settings → Playback → Subtitles → Font Then: Choose a different font (e.g. Arial, Roboto, or Default). Set Font size to Medium or Large. Disable any outline or shadow temporarily to test. 3. Disable Subtitle Effects Still in the Subtitles menu: Turn off Bold, Outline, and Shadow. Set Subtitle Position to middle or bottom to see if the rendering changes. 4. Check Firmware 5. Try Different Subtitle File Sometimes .srt files have mixed encoding. Open your subtitle file on a computer → re-save it as UTF-8 without BOM using Notepad++ or VS Code. 6. Clear Cached Subtitle Settings If the issue persists: Go to Settings → Playback → Restore default subtitle settings. Reboot the Z9X.