Firebase Admin SDK auth.get_user() suddenly very slow (~20s) on prod instance

We have a node that retrieves user information from Firebase Authentication using the Firebase Admin SDK. We simply use:

from firebase_admin import auth
user = auth.get_user(user_id)

Until recently, this call consistently took less than 1 second to complete.

However, starting August 14, on our LangGraph Platform’s production instance, it now often takes up to ~20 seconds to get a response.

Has anyone else experienced this slowdown?