Ever since updating to the Dravan patch, I'm getting consistent desync throughout the 5v5 games I'm playing. I'm unable to act or react in a reasonable amount of time, and it amounts to free minions and champion kills for the enemy team. I'm also have performance issues, with FPS dropping down to low 20s with the occasional hitch at ~2 FPS for several seconds. I run a GTX 570 and have had no issue running League of Legends at max settings before the patch, or any other game for that matter.

I hope to see this addressed very soon.