Client only crashes during champion selection

This has been happening for the past few days now and it is awful, by the time it crashes and I have to reload the game and log on I cannot join the lobby anymore and I get kicked out of the game and put into queue penalty box.

Also I cannot rejoin them even if it does crash instantly, I can be last pick and have the client crash when I join the lobby and the match has been found, log in within 10 seconds, and still be booted out.