I played about 10 hours of Reach on launch day, mostly in the “Halo: Reach Team Hardcore” playlist. At the end of the day I was rank 10 in that playlist, and now today I have been reset to rank 1. There are also no stats tracked on my profile for anything.
According to this thread:
https://www.halowaypoint.com/en-us/forums/85d779d52cfd46918b4f8b638f2e3c7b/topics/several-achievements-not-unlocking/b3f908eb-d239-4285-9334-84e9b162c96a/posts?page=1#post14
It would appear that stat tracking is done through Windows telemetry. This is not an implementation that makes sense, unless -Yoink!- is pulling strings and demanding it. If 343 have a choice, this should be remedied and stats should be updated by the game’s exe, because people who have Windows telemetry disabled have done so for a reason. Do not recommend that I enable it; I will not do so. Please fix this.
Thank you for your time.