[Crash] Game Kills Itself Between Champion Select and Loading Screen

This is a random bug. The game just decides to die between champion select and the loading screen. Where the screen normally goes black, mine stays normal and I have to end the client in task manager and load into the game 10 minutes later only to be flamed by my awesome teammates. This has happened two days in a row, twice, in ranked games. Riot, please. Just make a stable client for fucks sake.