Intermittent robotic / distorted agent voice during calls

Hi everyone,

We’re experiencing an intermittent audio issue with our Retell voice agent during live calls and wanted to see if others have encountered something similar.

Issue description:
Occasionally, in the middle of a call, the agent’s voice becomes robotic and distorted for a few seconds, then returns to normal on its own. The call does not drop, and the conversation continues as expected afterward.

Additional notes:

  • The issue occurs unpredictably

  • It does not appear to be tied to any specific user input or conversation stage

  • Audio distortion lasts only a short time (a few seconds)

We’re currently investigating whether this could be related to:

  • Network jitter or latency

  • TTS streaming behavior

  • Codec or audio buffering issues

  • Temporary load spikes

If anyone has experienced this before or found a workaround (config changes, recommended settings, logging tips, etc.), we’d really appreciate your insights.

Thanks in advance!

— Shayan

Hello @shayan_yousefi

Can you share a call id that has this issue?