Hi,
Could you share some code please.
Also, how did you configure your configuration.yaml file…I only have the chromecast icon displayed but no sound 
I have this :
# Text to speech
tts:
- platform: google_translate
cache: true
cache_dir: /tmp/tts
time_memory: 300
base_url: https://xxx.duckdns.org/
service_name: google_say