I bought an MSi Armor RX 580 4GB OC on eBay and am pretty sure my card doesn't perform as it is supposed to. I've checked the clock speed and it reads 1180mhz even though I've looked up what the speed is actually supposed to be at and it's 1366mhz. I'm pretty sure this card has had its BIOS flashed and need to flash the stock BIOS, hopefully making a difference in my games. Please, help me and tell me how to flash it and find a download for the BIOS. Thanks!