Question Is this sn850x running normally for this config ?

I installed a wd black sn850x 2tb in the top m.2 slot of my asus z390 P motherboard. I think that slot is pcie 3, but im not sure. The speed is a lot lower than the benckmarks online, which i guess are on a gen 4 slot. Is the drive running at a normal speed for this config ?

View: https://imgur.com/a/OQFG0XQ
Looks like it's using only one PCIe lane and for higher speed it needs all 4.
Use https://crystalmark.info/en/download/ and check "Transfer mode"