@yuriy-barvenko Ok, I'm in the same boat, but I think it is most likely the database back-end. Reason being, I migrated our database from the docker instance to a stand alone instance of PostgreSQL and I immediately noticed some performance degradation.

I'm running version 1.55.1 of FusionAuth and PostgreSQL version 14. There are documented performance improvements in both FusionAuth and PostgreSQL. I'll be updating my version of PostgreSQL and will report back.