Games with Qiyana in it giving random frame drops

I'm not sure if this is just the usual horrible broken client bug or not, but I've had two games where I experienced a large amount of lag and frame drops since the.... very good patch, both of which had Qiyana on the enemy team. One of them caused me to lose a ranked game because it froze my entire computer. All of my other games have been fine which leads me to believe it might be her. Both drops happened post-20 minutes.