I'm having an issue with Fleet where, when searching for labels or hosts in the "Select Targets" field in a New Query, it takes an extremely long time to return results (~15-30 seconds, if at all). I have less than 300 hosts enrolled/online. I'm trying to troubleshoot and identify the bottleneck, but everything looks fine on the back end. Searches return results very quickly and seem complete. DB looks healthy and connections aren't maxed out. Hoping someone can point me in the right direction wrt troubleshooting.
(all running in Docker containers)
OS: Centos 7
Nginx load balancing reverse proxy: v1.14 (web sockets enabled)
Fleet: v2.4.0 (3 instances)