HI i bought an used rx 580 from ebay that was probably used for mining and I recently flashes its bios back to the orginal bios and im seeing lower than normal FPS I get around 144 with a couple of frame dips going to 80 fps BUT in recent benchmarks specifically in the game "Fortnite" I see them getting 200+ easily without any frame dips any suggestions my PC specs are below.
RYZEN 7 3700X
RX 580 POWER COOLER 8GB VRAM
16GB G SKILL RIPJAW SINGLE CHANNEL
B450 D3SH