Plutonium

i want to use custom camos on bo2 for multiplayer but last time i tried to use them which was last night it messed up my whole game. i would like some help on how i could use them without them messing up my whole game

we all are in the US and on every other game we play together he was basically the same ping so im genuinely very confused. but i get your point the host always going to have the better ping , if i host i have 10 ping and he has 100 if he hosts he has 10 ping and i have 100 so like i dont get it