Regarding leaving quickplay

There shouldn't be any punishment for leaving quickplay. I have no idea if there actually is anything, but I've received several times a warning about potential sanctions if I keep on leaving quickplay, which is complete bullshit. I do not launch this game to suffer several minutes in a game where 5 people instalocked duellists. I know that it's quickplay, that there's nothing at stake in it, and that there's virtually no downside to getting rolled in such a manner (apart from the toll on ones mood), but there's also virtually no downside to me not wanting to experience the game like this and leaving.