I have an emerging Icinga 2 setup currently with about 180 hosts and 1700 services. Both Icinga (r2.13.2-1), Icinga Web 2 (2.9.5), and MariaDB (10.5) run on the same host (Debian 11 VM with 8 cores, 16 GB RAM). The setup works very well, but I am wondering about one specific observation: rendering service groups (under Overview / Servicegroups; of which there are currently 6, all defined with apply rules) takes > 5 seconds. Is this a feature or a likely bug given this setup and its dimension?