text: Title: BatchedInferencePipeline degrades transcription quality heavily
  Body: At first the new `BatchedInferencePipeline` seems great. It produces around 2X speed improvement compared to the normal pipeline. But after some more testing I discovered for some audio files the transcription quality is highly degraded. Whole segments are missing compared to the normal pipeline. Some segments switch language mid way for long periods.
  
  Example:
  
  Segment A has 30 seconds audio, fully in Dutch. It does contains a few English words. Half way the transcription segment the text becomes English, translating the Dutch audio. And at the end of the segment the `initial_prompt` is displayed. This happens at multiple places.
  
  So this makes the `BatchedInferencePipeline` not suited for a production application. 