Honestly the past couple weeks I’ve been experiencing lag and desync like I’ve never had before and I’ve been playing this pretty much consistently since it launched. It’s ridiculous. I think it’s gotten worse.
Whatever they’re doing it’s not improvements across the board. I have one friend for whom the game is nigh unplayable because of the desync issues. Which sucks bc he’s the one person who is always up for halo lol
I got my fingers crossed too but I ain’t holding my breath. 
Performance issues are really what’s killing the experience for us and has been for some time.