Do I need to upgrade my PC? I have to run on low settings for fortnite.?

My specs- CPU: AMD Ryzen 5 1400 Quad-core GPU: XFX Radeon RX 580 8 gb RAM: 16 GB When I try to play fortnite I need to run the game on low because if I increase my settings my frames jump around. IDK if I need to upgrade something in order to run the game in higher settings or if there is something i can do in... show more My specs-
CPU: AMD Ryzen 5 1400 Quad-core
GPU: XFX Radeon RX 580 8 gb
RAM: 16 GB

When I try to play fortnite I need to run the game on low because if I increase my settings my frames jump around. IDK if I need to upgrade something in order to run the game in higher settings or if there is something i can do in order to run the game on higher settings with a good fps.
3 answers 3