1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 33c1a4512c..7dfa2eeedb 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -841,6 +841,9 @@ class SyncHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def unread_notifs_for_room_id(self, room_id, sync_config, ephemeral_by_room):
+        # Temporarily disable notifications due to performance concerns.
+        defer.returnValue([])
+
         last_unread_event_id = self.last_read_event_id_for_room_and_user(
             room_id, sync_config.user.to_string(), ephemeral_by_room
         )