Not got a clue what you mean mate.When I cloned using Samsung's software AS SSD didn't show the drive as aligned properly, so I used Macrimum reflect instead, check it's aligned properly.
Yes to the first question and have not got a clue on your second.Have you installed the Samsung NVME driver? Is it running PCI-E 3?
Done and done.Install Samsung Magician, then latest firmware.
Install NVME driver (from Samsung website)