I have a WD black SN850 500GB in my M.2_1 slot on my ASUS ROG Strix x570i mobo. The only thing I can find in bios is set to M.2_1 link = Gen 4. Yet the SSD is still running at Gen 3 according Dashboard (Capability: Gen 4, Connection: Gen 3). I have the latest non-beta bios (ver 3603). Is there something I’m missing to enable Gen 4. My crystal diskmark is 3770MB/s, so it’s half its rated Gen 4 speed.