I do not know what happens to my computer in fortnite, the fps lower me up to 50 or lower in endgame with only 15 people and in creative it goes up to a maximum of 130 I do not know what it could be besides if I upload the graphics to epic the performance is almost equal to that played in low graphics also try with bo3 and it is the same 200 fps in low and 130 in ultra in no man's sky if there was a difference of 90 in epics to 140 in low but it is not the difference you expect for this graph and processor would expect at least get the 144 stable in fortnite which is why I mainly put it together i have a single slot of 8gb ram