After three days of unstable and slow Minibits mint, zaps and lightning address services we are hopefully back to being faster then lightning!
https://video.nostr.build/32a3666f9a90b36dd7b6d8f2626c133bad1949977fd4a17d924b96d06ed3a317.mp4
All evil caused by slow TLS handshakes on reverse proxy server. Not much that can be googled about, had to dig into the deep hole of wireshark. Nevertheless, only remedy was just to migrate reverse proxy out of container and rebuild it directly on host server.
Sorry for inconvenience, one can not be pissed enough when zaps do not go through!