Low read latency on SN750

I recently bought a WD nvme SN750 used model (2TB) from Amazon Warehouse. When I run some benchmarks, I see that the read latency/access time seems to me very high (an order of magnitude higher), in comparison to what I found from other users on the net (see screenshots below). Another strange thing is that I cannot run on it the integrity check test from my BIOS, it always fails. Apart from these issues, both BIOS and Windows properly detect the device, and speeds seem to be normal.

Do you think I have a defective device because of the high latency? Do you suggest me to return this unit? I would not like to do it, because I found this unit at a very competitive price and out of the benchmarks it seems to work fine.

Thanks for your advice!


Guys, any advice?