Game updating right after restarting my client (during game)

Okay, so I start up a simple Blind Pick Game as jungle and my ping shoots up into the 500s during the loading screen. Eventually, it says my game crashed and then I couldn't connect to the Proxy Server. I then restart my client and try to go to the launch screen but it's literally updating at 33% and is currently at 400+ files while my game is still going on.

I don't understand this. There's no new patch that's out (it's Patch 5.14 right now) and restarting the client just resets the update to 1 file like a normal update. Can someone inform me as to WHY this happens and HOW to avoid it?