Performance issue with setting JavaObject which size is between 10M and 30M


I hava a performance issue as title and the object’s life cycle is 5min.
My couchbase version is 3.1.
Per Node RAM Quota: 10240MB
No of Buckets: 6
Replication factor: 2
RAM/Quota Usage: 25GB
Disk Usage: 28GB

Is there some optimized configuration for that ?