Why my laptop can run better games on higher graphical settings than on lower?

crush852

Honorable
Sep 29, 2015
31
0
10,530
Hey guys . I bought used older lenovo laptop with 4gb nvidia , intel pentium 1.9ghz and 4gb of ram and I want to ask you why that laptop can run games on much more fps while for instance GTA V is on high setting than on low settings ? When I set GTA V on low I had 10-15 fps but when I switched to high settings fps increased to 50+ but fps on some games like on Overwatch is not effected with graphics changes and I cant get it on 60+- . (sry of my hardcore english)