When Infoworks authentication is configured through LDAP authentication the time taken for user to login is more than a minute.
LDAP referrals search slows down because of referrals in the LDAP result which in turn increases the socket connections.
Edit the file: /opt/infoworks/platform/conf/security.ini
Under the [main] section, add the below line:
contextFactory.environment[java.naming.referral] = ignore
Post this, restart platform service