During July 2025, Quentin Fuxa focused on stabilizing real-time audio diarization in the WhisperLiveKit repository. He addressed a critical bug in PCM data handling by refining the logic for adding audio frames to the diarization queue, ensuring accurate sequencing and reducing processing errors when diarization is enabled. Working primarily in Python, he leveraged asynchronous programming techniques to improve the reliability of speaker segmentation across sessions. Quentin thoroughly verified the end-to-end diarization flow to prevent data loss or mis-sequencing, and documented his changes to align with the existing architecture. His work enhanced the robustness of audio processing within the project.