Nothing i do makes Ltx 2.5 lip sync

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Your question

it refused to lipsync my custom audio. i tried modality, i tried guider cfg settings, i tried solid mask settings, the audio passes cleanly, and the mouth moves, but no synced at all

### Logs

```powershell

```

### Other

_No response_

No source file, test, or usable log is identified. Start by reproducing the LTX 2.5 lip-sync workflow with the custom audio and listed settings, including with custom nodes disabled; done requires a minimal reproducible case with logs or a confirmed fix for the synchronization failure.

Written by the indexing model from the issue text.