Update app.py

app.py

@@ -249,7 +249,7 @@ def process_prompt(prompt):
                  for speaker, text in item.items()]
         
         audio_files = []
-        with ThreadPoolExecutor(max_workers=2) as executor:
+        with ThreadPoolExecutor(max_workers=1) as executor:
             futures = [executor.submit(process_line, task) for task in tasks]
             for future in as_completed(futures):
                 result = future.result()