I just installed a Evo 970 nvme ssd on my machine as my boot drive and ran benchmarks. However, unlike other users I'm getting a speed of 900mb/s instead of 3000+mb/s. I've installed the ssd on the ultra M.2 slot(PCIe Gen3 x 4), updated the bios, installed the amd cpu driver and samsung NVMe driver.
My PC parts are
CPU: Ryzen 5 1600
MB: Asrock AB 350M PRO4 (supports m.2 NVMe)
STORAGE: EVO 970 500GB
RAM: 8gb ddr4
GPU: gtx 1080ti
POWER: 500W power supply