Another Adata product with sub-par performance? Hardly surprising. Along with sub-par performance, you can expect HORRIBLE product support!
My HP laptop was always returning an "Operating System Not Found" error upon every reboot since the Windows 10 Anniversary update with the SP600. None of my other systems with other brands of SSDs had this problem. Updated all the drivers, including ACHI and the problem persists. Tried to update the SP600's firmware -- nope! The updater wouldn't work! I pulled the drive and used a USB dock and a Windows 7 system and their updater wouldn't even see the drive even though it shows up in Explorer! What a mess!
Finally, I cloned the drive to a different brand and, behold!, all problems are solved! My wife even commented that the new drive was faster.