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#1
my slowest machine 1:53 and that's with about 6 startup programs loading (1 minute clean start)
There's a long running thread on this, read some of the times there and weep....
What is your Windows 10 Restart Time?
...then remember that to get a 20 second restart they need some seriously powerful kit and an SSD.
We don't know what kit you have, but a more reasonable comparison may be with my old Dell Latitude E4310 with its i5 M520 and an HDD.
(The link to get the test is in post #1 of that thread above)
As I said at the bottom of my post, the link to get the .vbs script is in the first post of the main What is your Windows 10 Restart Time? thread. It's actually a link to a Seven Forums tutorial.