Best driver for Dell Optane P5800X (053M3R)?

@NDRE28
Welcome to the Win-Raid Forum!
Maybe you can find some information >here<.
You forgot to mention the OS you are running. The performance is quite different with different Operating Systems.
By the way - the creation of a RAID Array is a good idea for HDDs, but not for NVMe SSDs. I have tested it myself: The performance gain is only detectable, if you work intensively with very big sized files, but the system may become unstable.