Off topic:
I have been sick with Covid since the 8th of February.  My sister-in-law was so kind to infect the household.  None of us were very sick, just stayed at home and suffered minor muscle pains.  Today I no longer have the cough.  Meanwhile my sister-in-law is leaving the hospital with oxygen to take home.  Karma bites back real hard.

Back on the topic:
Been testing the OS on the same machine.  I am getting out of 25 reboots;
Windows 10 OS (cold boot) 1 minute 45 seconds average time.
LXLE (cold boot) 35 seconds average time.

The warm boot - just reboot without power down.
Windows 10 OS, 2 minute 24 seconds average time.
LXLE, 42 seconds average time.

Now let's convert this to a percentile.
Windows 10 OS warm - 144 seconds = 100%
Windows 10 OS cold - 105 seconds = 72.9% = 27% faster than the warm boot.
LXLE OS warm - 42 seconds = 29.1% = 71% faster than the Windows 10 warm boot.
LXLE OS warm - 35 seconds = 24.3% =76% faster than the Windows 10 warm boot.

Time will vary from CPU to CPU, and other factors such as HDD and RAM speed.