I have a big problem to play halo 5 in multiplayer. Please i need and answer. Every time in The last weeks, when i try to play, i can finish just one game and from The second and more, in every one i get disconected and i already Lost a lot of ranking progress and i get banned a lot because of this. And even in WZ is The same. I dont know why only my profile in The Xbox have this issue. In this moment i cant play with my personal profile, im playing with a secondary because it doesnt have that issue, and that let me think that is something about my profile that make me disconecting from every game. I have tried a lot of ways with The Xbox one, with The modem, i did erase my profile and download again and The issue is The same. 
Please somebody help me…
Go wired and set your nat to open. This solved most disconnects for me.