Fortnite Battle Royale appears to be wildly popular even before this update, with the game proudly crowing about a total of 45 million players and a peak concurrency of 2 million players this past weekend. (mmogames.com)
This makes any sort of match making more difficult and results in lower concurrency for each mode. (projecthorseshoe.com)
Be very wary of the point at which your concurrent game's matchmaking fails due to high concurrency ratios. (lostgarden.com)