I’ve been studying this for a few weeks, and I have come to a definitive conclusion that for some reason the MM seems more accurate when less players are on. Maybe this is just some kinda correlation and not causation, but this has been a consistent trend for me in NA: after 12 midnight, matches are supremely more balanced and challenging across the board, and I actually get matched up with players relative to my skill rather than my VST.
I get consistently matched with higher tiers than mine and it’s just so satisfying. Still really can’t tell if it’s jist more good players playing then but it strikes me as odd. Got a few theories actually but who knows.