The long delay appears to be FAB waiting for Flexnet to finish searching for the license, etc.
Perhaps using a different PORT# for FAB to access the license (on the server) may help. Make sure on client computers to use the environment variable NUMINNO_LICENSE_FILE (as the default variable LM_LICENSE_FILE may have many other products included).
After doing a quick search I found these links which may help,
- https://www.ibm.com/support/pages/delay-license-checkout-slow-performance
- https://community.flexera.com/t5/FlexNet-Publisher-Knowledge-Base/Resolve-a-Delay-in-License-Server-Service-Start-up/ta-p/3189
Thanks again, and please let us know your results.
Best regards,
Simon