mac game client extremely laggy since urgot patch

Since I loaded the urgot patch my mac game client has been unplayably laggy. I restarted my computer, the client, and my modem but that didn't fix the issue. I figured it is not an issue with my connection since my ping is not actually elevated - it remains at 50-70 even when the game is shuddering. The client is consistently laggy throughout the entire match, exhibiting 1-2 second lag times in which commands can't be input, minions and champs appear frozen in place, and the 'catchup' time afterwards.