Halo MCC keeps kicking me out

I’ve tried reinstalling the game and power cycling and it still won’t let me in, can somebody help me find the solution to this?

I’m having the exact same problem. Thank god I’m not alone. I can maybe finish 1 out of every 10 matches I try to play. And every time it kicks me out I get temporary banned for longer and longer. Every other game is fine. I can play Halo 5 for hundreds of games with no issues. MCC is completely busted.