Played a little last night and noticed that every server now has a lot more 'Ranked Medleys' then normal. Each room now has Medley 1/2/3/etc for 4x4, 8x8, and 16x16. They also mix up the maps and modes in them. I was playing Crossroads on Extraction in one of the 8x8 rooms, when I believe normally its Demolition only.
It was also running spectacular. So if you've given the game a break because of the way it was running, it's time for you to hop back on and give it another try.