Campaign Leaderboard isn't Updating

So I’ve been playing MCC on PC, and have finished the Reach campaign on Legendary. Some missions alone, some with friends. I’m going for the whole “complete on legendary in under 3 hours” thing, and I’m working on whittling my times down, and I’m getting pretty close. Yesterday, I played two missions and noticed that the campaign timing leaderboard isn’t updating to my new times. Anyone know anything about this? I’ve been obsessively checking the leaderboard to see if it updates.

Right now, I am having the same issue on Xbox. On Halo 4, I repeat multiple missions and beat my previous score and time record, but the game wouldn’t save and update my new records. As of now, I’m getting very frustrated because I am 12min off of beating the game in under 3hrs. I hope 343 fix leaderboards stats issue,

The overall matchmaking stats are frozen as well. Seems to be a server issue. Ridiculous