After asking a professional, he checked my pc and said that my cpu temp were reaching 90, then he told me i needed to change the cpu, cooler, I used to play fortnite at around 240 fps, but after cleaning my pc my frames were dropping all the way to 50 and to the point where the game was unplayable. So I'm wondering was that happening because my cpu temp was reaching around 90. I mean that is a huge fps drop, from 240 to 50 to as I said before the game became unplayable.