Your mastery pick code sucks

I was just in a rank game and I was trying to redo one of my masteries. It took fourty seconds to click 20 seperate masteries, and then I attempted to leave the mastery picking screen to pick my guy, and then I got dropped from the match because it took over eleven seconds to save masteries.This is an unfair advantage for people that are not last pick, and I think it's the lamest thing I've ever seen in a video game.