Which NVMe Drivers are the best (performance related)?

Today I swapped my PCIe 3.0 drive to a PCIe 4.0 drive, but the performance of the 4.0 is mor bad than the 3.0.

I swapped the SKHynix BC711 (PCIe 3.0) to a WesternDigital SN740 PCIe 4.0). I used the generic Microsoft NVME driver.

Do you have any idea about the reason?