Disconnect every time Miss Fortune uses ult

I know I don't have the fastest internet connection, but I've noticed that I crash every time miss fortune uses her ult. I'm assuming it's not a glitch, but just too demanding on the data stream.

I already crash in about 20% of all teamfights, but when Miss Fortune gets involved it goes up to 100%.

By the way, I already have everything set to the lowest settings and I have the fastest internet provider available for the area (still slow).