Drastic fps drop

Oct 8, 2018
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I am having MSI GP72 laptop bought a year ago with i7 7th gen and gtx 1060 . In these previous days I am having drastic fps drop when I play fortenite game ,when engaging in populated areas . I should be getting atleast 60 fps but now its little unsatisfying that for a few sec it goes down 28-30 fps .what should I do ?