A custom gamemode for Team Fortress 2 - Players compete against each other to get the most points by playing a series of rapid fire microgames in order to win the round!
It is the sound cache, I checked the files packed in the latest map and they are the correct rate
After clearing the sound cache, they also play through the in-game console
I don't think this has to do with the sound cache but could you have a look into this @Mario6493 ?