In a online only game where there's no dedicated servers, sbmm on a peer to peer network is horrible because it focuses on connectivity second. Which leads to..... invincible teleporting enemies ammo crates impossible to pick up laggy gunplay, bad hit detection, people running towards you while you shooting them and out of nowhere you die because he activated his super, but the lag delayed the animation. trade off kills. ( you kill him with a shotgun first but you die afterward because of the lag having not registering the kill before you did) I can litteraly write a book but you get the idea. Sbmm in general isnt a bad idea, but when you comprimise connection over skill the it will be a shit show.