Performance issues with 'Manage Users and Groups' portlet in WebSphere Portal

There are situations like when assigning a member to a group or creating a new member for a group, listing users for a group, etc may result in poor or slow performance or even browser timeout with the 'Manage Users and Groups' portlet. These especially happends when a large number of users in a group or large number of groups exists in the ldap server. To avoid such conditions you might want to modify these configuration parameters http://www-1.ibm.com/support/docview.wss?rs=688&ca=portall2&uid=swg21247210 of the 'Manage Users and Groups' portlet based on your needs.