[DJ Sona/Client] Massive FPS drops during game - horrible impact on gameplay overall

I downloaded the patch this morning and didn't get to play all day, but I did buy DJ Sona. So, I can't say for sure if it's the client or the skin (or a combo of both), but what I can say is that I was getting huge FPS drops during my game. They were so bad that the screen would change maybe once every second and it ended up getting me killed many times. For most of the game, the frames fluctuated between 40-65, but would drop below 20 or worse during team fights or getting dragon. My computer could ALWAYS handle playing LoL on the highest quality settings, but even dropping them down into mid-range quality didn't improve the experience. If I recall, I also had anti-aliasing, 60 FPS cap, and (I think) a function called "character inking" all active or selected at the time.

Can anyone (maybe a Rioter) address this issue? Seems like more people than just me have had this FPS issue today, whether it be due to the client, skin, or otherwise.

Thanks!