Why no 4 player splitscreen campaign and Firefight?

Campaign and Firefight are supper laggy on Xbox live but bungie let’s you use 4 players. Why can’t you play campaign and firefight locally with 3 or more players? I love Xbox live but I still have parties and like to play splitscreen.

I dunno…

It has to do with the power of the xbox itself. If you notice playing campaign in just split screen cuts out a serious amount of detail (sniper rifle image/certain hud elements/grass type objects/reflections) not to mention a severe decrease in the render distance.

next time you play 4 player split screen take notice of some of the textures. they become extremely low res if you are not within 5 metres of them. to render all the enemies and explosions and everything all going on at once from 4 different perspectives is not possible.