Direct X Error = Leaver Buster

I can't join a ranked game without getting a Direct X error. I played an ARAM game just fine right before. Didn't close the launcher, didn't update any software. All of a sudden BOOM Can't connect no bugsplat, no reconnect. Just some lame BS showing me the launcher home screen. What is this crap RIOT? Punishment because your game breaks down? Very nice...

Update: Just successfully joined an ARAM game (After waiting the 5 minutes...) no issues... Too damn scared to try and play a fucking ranked game...