Casual is terrible and has at least 3 faggots playing pyro per team, they can't even balance pyro correctly and instead buffed him to have the second highest damage output with no aim required. Also heavy-medic retards are running rampant everywhere you go, and you can't use comp matchmaking to get away from pubs because the tf team are too goddamn retarded to make a function 6s mode...which is one of the many examples of those fucksticks releasing shitty, non-functioning updates (not to mention the complete absence of communication from them anyways). The TF team are the reason why this game is rotting away into irrelevance.
ps if you're a part of the tf team and you're reading this, take note and try to improve your shitty work ethic in the future. maybe play your own damn game for once???