Right off the bat, I’ll say that I have the preview NXOE, so that most likely is the cause of this.
Ever since Halo 5 launched I’ve had a message over co-op and multiplayer that says something about the servers not being suitable for my entire fire team. The only thing that fixes it and allows me to play multiplayer is to uninstall the game and reinstall it. I have to do this every time I wanna play multiplayer because that’s only a temporary fix. If I exit and reboot the game it’ll give me the same message again. I’ve barely played multiplayer since launch because of this. It needs a fix ASAP because it’s absolutely ridiculous after I spent $500 on the console, $250 on the LCE, and $80 on the controller, and I can’t even play the multiplayer without reinstalling the game every single time. It’s really disappointing.
My NAT is open, my connection is great, so it’s not me.