gtx 1060 max-q

Hello guys. I have i5-7300hq, gtx 1060 6gb max-q, 8gb of ram(single channel 2300MHz), ssd and hdd. When I play LOL in highest settings I get stable 150fps, while play cs:go on lowest I get 230 FPS, but in Fortnite on lowest I got very unstable FPS and don't even go higher than 110 (not included...