Go to Home > Google Play
Search and Install "Google Text-to-Speech"
Go to Home > System apps > Android Settings
Select "Accessibility"
Select "Text-to-speech output"
Select "Google Text-to-speech Engine"
Select settings icon right next to "Google Text-to-speech Engine".
Download & Install voices like, English, Greek, Chinese, Cantonese, etc, based on your own needs.
RESTART "Bluestacks" to get the TTS works properly.