diff --git a/ansible/roles/cassandra-state-validated/defaults/main.yml b/ansible/roles/cassandra-state-validated/defaults/main.yml
index 7da812e20d752f3fa8dbd10985bc6aaddf1bd3e0..d6c5241afdb81c26529a295a70ab05b87efbfd38 100644
--- a/ansible/roles/cassandra-state-validated/defaults/main.yml
+++ b/ansible/roles/cassandra-state-validated/defaults/main.yml
@@ -4,7 +4,7 @@ sunbird_cassandra_server: "{{groups['cassandra'][0]}}"
 sunbird_cassandra_port: 9042
 sunbird_sync_api_endpoint: "{{proto}}://{{domain_name}}/api/data/v1/index/sync"
 sunbird_sync_api_key: "{{sunbird_api_auth_token}}"
-sunbird_sync_block_size: 150
-sunbird_sync_sleep_time: 5000
+sunbird_sync_block_size: 50
+sunbird_sync_sleep_time: 10000
 sunbird_cassandra_username: cassandra
 sunbird_cassandra_password: password