The rage is strong.
But yes, there are matchmaking issues. I believe 343 released an article yesterday saying they are working on updating the servers (from their end, not ours) to help improve the experience.
My MCC did freeze before, but that was while loading, not while playing campaign, so no inconvenience really. Easy to fix (just restart game).
I had a funny glitch on one of the Arbiter levels, when I fired my sentinel beam it fired as TWO BEAMS in DIFFERENT DIRECTIONS SIMULTANEOUSLY. Was so funny ahahaha.
MCC is far from "beyond abysmal," honestly Best game I bought in years.