At this speed, it's the motherboard boot that slows down the start-up!
And I'm quite serious! If I wanted to boot up faster, I'd have to reduce the time it takes to display the BIOS options because that takes half the time.
So all in all, there's nothing to say about the capabilities of this NVME SSD, I've had it for 2 years and it's still going strong. It's worth noting that after an evaluation with the Samsung Magic software, the writing has lost a little of its superbness. But as this is my system drive, it works quite well, so that's to be expected. No drop in reading performance, however, according to this software.