PRIVATE MATCHES NOT SHOWING END GAME STATS

I have noticed for a long time now when playing private matches with friends of mine that private matches do not show stats when the game is over. We mainly play Team Deathmatch, Gun Run and Control. In mixtape it shows the stats at the end of the match. In private (customs) lobbies there are no stats displayed at the end of the match showing kills, assists, knocks and damage. Can this be fixed?