Update voice_processing.py

voice_processing.py

@@ -133,7 +133,7 @@ def run_async_in_thread(fn, *args):
 
 def parallel_tts(tasks):
     # Increase max_workers to better utilize CPU and GPU resources
-    with ThreadPoolExecutor(max_workers=8) as executor:  # Adjust based on your server capacity
+    with ThreadPoolExecutor(max_workers=20) as executor:  # Adjust based on your server capacity
         futures = [executor.submit(run_async_in_thread, tts, *task) for task in tasks]
         results = [future.result() for future in futures]
     return results