@RDFTKV
The Patriot SCORCH M.2 SSD 128GB PCIe 3.0x2 NVMe 1.2 SOLVED my problem and as you indicated in your test it does not produce artifacts. It is considerably slower, though, but makes my VIM3 happy!
I think it could be added as candidate in a HW compatibility list. 
I think as well It could be worth investigate the reasons behind the Sabrent ROCKET 256GB was so problematic.
Thanks ALL.
Marco
EDIT: Not even slower, as fast as the other one.