Dota 2 problem

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Hello guys , I realized I am having problem with dota 2, my spec as follow: 2700k, maximus v formula, asus direct cu ii 670 non oc, 512gb of vertex 4 ssd ,32 gb corsair vvengeance 1866 sticks, I Max setting no problem at game play , but whenever there is a void ulti. My screen lags , iI remember there are few other problems hero ulti too but can't rmb at this moment , anyoneexperience aanything like this before ?