MM is Constantly Changing

I just had a thought.  In the last week, if I did a no-fill the next morning to pop out a challenge or just grab a treasure pack, I was several times the champion, I guess from having well over 1K damage and 8-10 kills in my last "match."  I wonder if those gun run stats have now bumped me into the next pubs MM tier in trios.  My three matches today felt so off from my usual solo queue experience.  But I'm also used to the MMing seeming pretty terrible in the last few weeks of the season, too.  So I dunno.  This season is the first time in several seasons that I've solo queued in any significant quantity.