Here's another and it's about 23 seconds. It doesn't seem too slow.
https://www.youtube.com/watch?v=Ieo5PAFyfd0

I have probably put mine down hundreds of times over 54 years and not paid that much attention to the actual speed. Partially because I pause it part way down to fold back the flaps and close the clamps so the boot fits. And about several inches from all the way up to open the hold down clamps.