[GAMEPLAY] One-For-All Mordekaiser extreme FPS drop

I just recently played a game of One-For-All with our most beloved Master of Metal, Mordekaiser, where I experienced some late-game FPS drop.

During the game everything was nice and dandy until about level 16, where many people on our team and the other team started experiencing a slight FPS drop, and then a second more extreme FPS drop when a few Mordekaisers were on the same screen. 4 people said they went down to 5 FPS, one said he only dropped to about 150.

How to reproduce: Step One - Play with 5 Mordekaisers