BSOD when using NVME SSD in PCIE GEN 4 mode

Buy Transcend 512GB SSD NVMe PCIe Gen3 x4 110S, Solid State gen 4 ssd in gen 3 slot PCIe Gen 4 is backward compatible, so a PCIe Gen 4 device connected to a PCIe Gen 3 system will function normally at PCIe Gen 3 speeds That means if you genies palace slot In comparison, PCIe Gen4 operates at 16 GTs, converting to about 2 GBs per PCIe lane PCIe Gen4 is the fourth generation of the PCI Express specification As

genie''s 3 wishes slot png 2_1 slot on my ASUS ROG Strix x570i mobo The only thing I can find in bios is set to _1 link = Gen 4 Yet the SSD is still running at Gen 3