I have a 32 GB Ram root server from Living-Bots
Bungeecord runs for me, Lobby-1 and CityBuild CityBuild has 21 plugins
Lobby has 8 plugins BungeeCord 3 Plugin CityBuild has been assigned 2 GB
Lobby 3 Gb and bungee cord 1 GB
Here video;
Lies a little at the beginning because I forgot an attitude! But you sieds
Presumably the processor of the server is overloaded or the bandwidth.