[CRASH] 6.2 crash is driving me mad.

I log on. Pick a game. Accept the game. Client closes and then proceeds to blame me for the insident by making me wait (x) amount of time. I've tried a few things already (Re-install, close the updater and client via the task manager, reopen league, where I am promted to terminate the "old instance", etc.)

Things were running fine before this, so it's not a matter of hardware. Although I am running Windows 10, which for a lot of other games, can be somewhat of a problem.

Anybody able to help me on this?