dify - 💡(How to fix) Fix Collection of TTS, Auto-play, Windows, Docker, Delayed Start Issues

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Dify version

1.14.1

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

#13759 13759 #33918 13759 #34542 34542 #34542 34542 #34542 34542 #34542 34542

Load up a model in the agent "Debug & Preview" that has the TTS feature, ensure auto-play is turned on, and prompt the agent to tell you a joke. You only hear the last sentence from an example like this:

Sure! Here's a joke for you:

Why don't scientists trust atoms?

Because they make up everything!

✔️ Expected Behavior

No delay, it should read the entire message.

❌ Actual Behavior

Only reads the last sentence.

I have referenced all of the previous issues, there seems to be a lot of users experiencing the same problem, and no clear solution. I want to revive this issue here.

I have tried appending to the docker/.env file:

# TTS auto-play tuning (added manually — not in default .env)
TTS_AUTO_PLAY_TIMEOUT=2
TTS_AUTO_PLAY_YIELD_CPU_TIME=0.005

...and:

# TTS auto-play tuning (added manually — not in default .env)
TTS_AUTO_PLAY_TIMEOUT=5
TTS_AUTO_PLAY_YIELD_CPU_TIME=0.05

...both with and without ffmpeg installed using:

docker exec -it --user root docker-api-1 bash -c "apt-get update && apt-get install -y ffmpeg"
docker exec -it --user root docker-worker-1 bash -c "apt-get update && apt-get install -y ffmpeg"
docker compose restart api worker

...verified it installed with:

docker exec -it docker-api-1 ffmpeg -version
docker exec -it docker-worker-1 ffmpeg -version

...and validated the .env values took change with:

docker exec docker-api-1 env | findstr TTS

...and many, many docker compose down/up, issue persists.

Best I've gathered is that this has something to do with caching/buffering before it actually starts playing? Would be nice to get this fixed in an upcoming release.