WDSN850 Error SLOW - Z490

Hello, I am having problems with my SN850 500gb drive. I happen to install it on my M.2_1 (PCIe 3.0, SATA) and it is reaching half the guaranteed speed, about 3500mbs. The board where I have it installed is a ROG STRIX Z490-E GAMING. I don’t know if anyone else has the same problem.

Screenshot_1

PS: I already updated my BIOS and SN850 firmware to the latest version.

Greetings!

Please look into the technical specs!
The SN850 is for PCIe 4.0 (7877MB/s max) and you measured in a PCIe 3.0 (3938MB/s max).