Why isn't my gpu running at a hundred percent when playing games.

May 3, 2018
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Hey guys,
Do you know why my GPU is not using it's full potential when I play games (mainly fortnite).

Specs:
CPU: AMD RYZEN 3 2200G
GPU Nvidia GTX 1070TI
Ram: 16GB(two sticks)
Motherboard: Gigabyte B450M DS3H
PSU: Cooler master: MWE 550
SSD: SU650 480GB

And do you know whether intel cpu's are compatible with my motherboard?
Thanks
 


So it has nothing to do with my psu?
If so, isn't my cpu more than enough to run fortnite at good settings?
 


So Do you know a CPU that pairs properly with my GPU?