Hi so I did everything you did except updating the mobo drivers and I got these results. As for my PSU I think it is a 650 or 750 gold.
UserBenchmarks: Game 158%, Desk 99%, Work 154%
CPU: AMD Ryzen 7 5800X - 94.9%
GPU: Nvidia RTX 3080 - 170.1%
SSD: Samsung 970 Evo Plus NVMe PCIe M.2 1TB - 254.8%...