Game Crash In Champ Select

I've had my game crash around 3 times during champ select at some point, usually after I choose a champion so it won't even make me dodge from it. However, what it can do is make me go in game with wrong runes and masteries because I can't change them due to the game freezing and crashing. It happens at pretty random occasions too; I have not noticed any patterns with when it freezes.