Why does my minecraft buggy world mega around?

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.