I wrote about this in another thread on this topic.  HvV has a huge issue with AFK credit farming.  Multiple players are rigging their controllers to keep them "active" in the game, and the game design is such that they just keep spawning into the game even though they are not actually playing it anymore.  I think what might be happening is seasoned players are compiling lists of known AFK credit farmers, and when they realize they are being matched with these cheaters, they are leaving rather than allowing the cheaters to amass points.  Currently, the only way to stop the credit farmers is to leave them hanging in the "waiting for players" screen.  This really stinks for the new players who aren't aware of what is going on.  Unfortunately, the credit farming is becoming so widespread that almost every game has at least one AFK player in it.  EA absolutely must change how the spawn cycle works in HvV, or they might as well just delete the game, as it is becoming unplayable in its current state.