I noticed that calling PlayerLoginEvent specifically causes server to freeze for around 5 seconds with no reason or logs (freezes like not responding to commands, etc.), I call it like any other event (Bukkit.getPluginManager().callEvent(new PlayerLoginEvent(fakePlayer, address.getHostName(), address)) . Even though I develop a fakeplayers plugin, I do not think this issue is wholy about fakeplayers. This specific event does it, others don't.

I wonder how spigot itself calls the event, so I can learn from it, can't find it in the sources.