So far, from experience. It is incredibly trying to get into a matchmaking game with friends for either Dominion or Brawl. It takes sometimes several attempts because one person can't get in, or it puts only the leader into a game. It happens repetitively in UbiSoft games, even Rainbow Six, which this game is almost a medieval copy of (not that I'm against it, I like it immensely) but matchmaking needs to be improved.
Anyone else having problems with matchmaking at times?