OK, this is not a dracut bug, because you are using initramfs-tools. I will reassign the bug to the other package.
Are your installations on real hardware or in a VM? This bug reminds me on a blog post about slow booting. Maybe this is related? https://daniel-lange.com/archives/152-Openssh-taking-minutes-to-become-available,-booting-takes-half-an-hour-...-because-your-server-waits-for-a-few-bytes-of-randomness.html -- regards Thomas
