DNF is very slow without modifying dnf.conf. We'll modify /etc/dnf/dnf.conf for speed up DNF.

Dependencies

deltarpm

DNF.conf

Add these to /etc/dnf/dnf.conf:

# dnf.conf
fastestmirror=true
max_parallel_downloads=20
deltarpm=true

By the way, you can add defaultyes=true for [Y/n] (default is [y/N]) in package installs.