diff --git a/core/streaming/manager.py b/core/streaming/manager.py
index 6cf120f..0856635 100644
--- a/core/streaming/manager.py
+++ b/core/streaming/manager.py
@@ -458,11 +458,15 @@ class StreamManager:
 
 
 # Global shared instance for application use
-# Will be initialized with config value in app.py
-shared_stream_manager = None
+# Default initialization, will be updated with config value in app.py
+shared_stream_manager = StreamManager(max_streams=20)
 
 def initialize_stream_manager(max_streams: int = 10):
-    """Initialize the global stream manager with config value."""
+    """Re-initialize the global stream manager with config value."""
     global shared_stream_manager
+    # Release old manager if exists
+    if shared_stream_manager:
+        # Stop all existing streams gracefully
+        shared_stream_manager.cleanup()
     shared_stream_manager = StreamManager(max_streams=max_streams)
     return shared_stream_manager
\ No newline at end of file