[CRASH] Yasuo crashing the game.

Hey Riot and League of Legends community! :) So recently I've been attempting to try out Yasuo on Summoner's Rift in Teambuilder. Every time I've picked him the game crashes for me (but nobody else) as soon as the game starts and in order to do anything I have to restart my computer, as I can't ALT + TAB out of the frozen game screen. I highly doubt it's my computer, as this doesn't happen with any other champion in the game for me.

As far as recreating the situation, I queue up in Teambuilder as Yasuo in mid lane and select "assassin" as the role. I doubt the lane and role have anything to do with it, but anyways... the loading screen goes by fine, except that I've noticed that I load slower as him. And then when the game begins, the screen freezes and I can't take any actions. Also, I haven't tried picking him on Twisted Treeline, Howling Abyss, or The Crystal Scar yet.

As I noted earlier, this doesn't work with any other champion for me (it happens EVERY time I pick Yasuo by the way) and I'm not sure if others have had the same issue or not.

So that is all! Thank you for those of you that read this and if anybody has an answer/solution, it'd be much appreciated!