Plutonium

when you stand still its fine its when you start moving around aswell
weve also tried swapping hosts, its just the same thing but whoever isnt hosting lags

its not our internet because without mods theyre fine, were thinking its a support issue with the version of our cracked game

im trying to get mods to work on zombies multiplayer but when my friend joins he gets super high ping when he runs around

Is there any support with multiplayer use?
my friend seems to get really high ping when moving but goes down when he stands still so