Benchmarks (boot time)
High-end platforms such as X299, but certainly AMDs Ryzen and Threadripper as well, often take longer to boot. It is not exceptional that it takes several seconds before the BIOS is through the POST-phase. This is why we measure the boot time of the system.
Especially the ASUS and ASRock boards often have fast boot times, but generally speaking we can conclude that X299-motherboards do not boot very fast.