Ranking is all screwed up

For the past few nights, I noticed ranking has gotten screwy. I would lose one match and drop 25% of my rank. Then, I would win 3 or 4 matches afterwards and my rank bar doesn’t increase, even when I played 3 v 4 and won, or when we beat higher ranked players. All in all, I’d say my fireteam and I won 75% of our matches in the past few nights, so I should at least be at Diamond 2, but I’m stuck at 3/4 Diamond 1 after 5 wins. Just when I got better at the game and am having a good time, 343 does something epically stupid to screw up the my enjoyment of the game. And yes, ranking up is a big part of that enjoyment. Fix this, 343.

Have a read through the first post in this topic:
https://www.halowaypoint.com/en-us/forums/58b8518e005f432381ab99fbcaf931e0/topics/matchmaking-feedback-update-%e2%80%93-may-21/7d3f6e81-5f9e-44f7-b5cf-30f85d13f320/posts

And the first post and responses in this topic for a detailed explanation of that has been happening with the ranking system:
https://www.halowaypoint.com/en-us/forums/58b8518e005f432381ab99fbcaf931e0/topics/matchmaking-feedback-update-%e2%80%93-june-11/f8c32226-26a6-4f1f-8899-ff162b0a5fae/posts