Huge FPS drop with the Bladestorm skill

Hello!

I'm currently playing a Bladestorm build, the main problem is that when the storms stack up, my fps drop significantly up to a reduction of 30-40 fps.

I don't know if it's also affected by the latest Windows update or something, as it only happens with this skill. With Perforate, Cleave... my fps do not drop like with Bladestorm.