My WD Green 120 Gb Drive is extremely Slow!

noname23

I bought WD Green 120GB 540MB-430MB/s 2.5" Sata 3 SSD WDS120G1G0A the speeds are extremely below the average.
and it is pretty slow. (40 gb is empty right now.) Just windows 10 and some apps are installed on the drive.
Please chech my benchmarks.

What should I do ? Thanks.

Windows 10 x64