diff --git a/conf/config.yaml b/conf/config.yaml
index 792868c..c294539 100644
--- a/conf/config.yaml
+++ b/conf/config.yaml
@@ -63,6 +63,11 @@ appservice:
     # You should disable bridge -> sync_with_custom_puppets when this is enabled.
     ephemeral_events: true
 
+    # Should incoming events be handled asynchronously?
+    # This may be necessary for large public instances with lots of messages going through.
+    # However, messages will not be guaranteed to be bridged in the same order they were sent in.
+    async_transactions: false
+
     # Authentication tokens for AS <-> HS communication. Autogenerated; do not modify.
     as_token: "This value is generated when generating the registration"
     hs_token: "This value is generated when generating the registration"