almost 3 years ago - Mandy - Direct link
The skill based matchmaking system is currently collecting backend data of matches. The "killer lock" was put in place in preparation of this match making system being implemented into the game...it means that the game doesn't require an update to implement/test it and can be done via our systems only.

As the matchmaking is done per killer, it prevents players from queueing with a killer they may be weaker on, getting matched with players of that level and then switching to one of their stronger killers.