Crashing & lag

I’ve been having multiple times where my game crashes and goes back to where I have to start the game back up again. I’m on Xbox one btw. Also I have gotten lag in game where I’m shooting enemies and they take damage and then they die 15 seconds later and then I die because of the other enemies that are there. I’m wondering if it is just server error on Xbox. It just been happening to many times and dying my gameplay.

I'm experiencing the lag issue as well today since a little after noon when server traffic picked up.