Competitive Matchmaking has been completely ruined by cheaters, Games are being HvH and legit players are caught in the middle, I gave this update a break seeing as it could of improved CS:GO as a whole but the cheating problem has gotten to the point that I don't even want to go near matchmaking. If you are looking for a better MM experience then FACEIT or ESEA are your best bet. Giving Prime to every user who bought the game was a total joke. Danger Zone isn't too bad but expect cheaters there too unfortunately and free to play users who wish to try CS are pretty much screwed too.
This is the update that killed CS:GO.