you provided write test result, and included the advertised speed in the screenshot. and it matches. nothing to write about here:)
"my NVMe on windows easily get 1000 MBps" it means not a properly executed benchmark. No drive will be faster than specified, even if it's shortly masked by cache or something like ASUS RAM disk. NVMe drives can have speed of 0.5GBs to 7GBs. You drive is too old to be shining today. 951 successor model is 2.5x faster, 980 is another 2.5x faster despite small capacity.