Whisper API feedback loops?

I have a Zapier “Zapp” that uses Whisper to transcribe VoIP calls.

For the past several weeks I’m getting feedback loops about 5% to 10% of the time.

The caller might “yes, yes, yes.” But the transcript just says "yes, yes, yes, yes, yes, yes, yes, yes, yes, yes, " until it runs out of tokens.

Is there newer build? a better endpoint? another TTS solution??

AHI TIA