Illaoi ult causes fps drops

Thank you, Riot. It was Graves smokescreen which dropped fps dramatically, and now it is Illaoi's ult which makes any teamfight literally unplaybale for me. All I see is a big clusterfuck of tentacles, and I can't even move. I know that if there is an Illaoi on the enemy team, I am going to lose because I won't be able to do anything when she ults.