can a PSU cause inconsitent FPS?

cdgamerz

Reputable
Feb 7, 2017
195
1
4,715
hello. i have a pc that has a stock PSU that came with it when i bought it, and in some of my games, my fps drops overtime. for example, in fortnite, when i first launch the game it starts at 260fps. then when i return to the main menu, it drops to 250-240, then it goes lower and lower until 190.
My Specs:
Intel Core i5 7400
8GB Single Channel DDR4 2400MHZ
PNY GTX 1050 2GB (i overclocked it, it's stable)
Stock PSU (I don't know the wattage)
could my fps be inconsistent because i overclocked my GPU? i also tried putting my settings to stock on my gpu and it still did it. i have no idea what to do.