PC client froze during GAC match

I was just in the middle of a GAC match and the PC client completely froze the battle while JMK was mid-move. Like... He ended up just standing halfway between my team and the enemies for about 3 minutes while the clock ran out. Every button on the top left of the screen worked except the auto-battle button, which did nothing. And the character controls at the bottom right simply weren't there.

There's a very real chance I lose the match because of this, so I just wanted to rant a bit.