Payday 3’s launch went so poorly that more people played Payday 2 all week
Payday 3 released on Sept. 21, and between that date and Oct. 1, Payday 2 still had significantly more players than the new game. Terrible servers will do that, I suppose.
Redditor u/ArmyofKnights pointed out in a post that there was only one brief period on Sept. 25 that Payday 3 passed Payday 2 in player count—the entire rest of the time, Payday 3 fluctuated at around 20,000 players, while Payday 2 hung out around the 40,000 player mark. This data doesn’t come from speculation or personal observation, but from Steam’s official chart that tracks player count.