Fast Boot is the BIOS is enabled, but has little to do with the Fast Startup functionality of Windows and all testing I’ve done is with the BIOS defaults.

A cold boot or a plain reboot takes about 20-25 seconds and depends heavily on attached USB devices which need to be initialized. Normally I only have a USB dongle for mouse/keyboard attached.
A boot (after shutdown) from Hibernation takes about 5-7 seconds
If Fast Startup is enabled in Windows AND the computer is shutdown and restarted, it should take about 5 seconds. That’s what I found when it was working.
- In Hibernation mode, the complete state of Windows (opened programmes etc.) is written to hiberfil.sys and shows Windows the same way as you left it after shutdown.
- If Fast Startup is enabled, only the Kernel and drivers are buffered to hiberfil.sys and shows a ‘clean’ Windows after restart, but ONLY if the PC has been shutdown first. Fast Startup does not work if you reboot a PC. Only on shutdown data is written to hiberfil.sys
I’m not saying that the SER8 is slow, on the contrary. However, the Fast Startup functionality of Windows should work as it does on every other computer (Intel or AMD based) I’ve had and still have.