Champion Select Bug

I'm been having a bug where once I enter champ select and it is either my turn to ban or select a champ, the game totally freezes. It's done this on both my mac and gaming pc.

So here's an example of what happens: Three champs will be banned, my ally will pick someone, the enemy will pick someone and then once the count down reaches zero, it freezes. Then after around 30 seconds, it boots me. I try to join the queue, but it says I dodged the game.

My internet connection is fine.