imoverclocked parent
Maybe, maybe not. If you are on a bandwidth limited connection and you have a bunch of NPM packages to install, 5% of an hour is a few minutes saved. It's likely more than that because long-transfers often need to be restarted.
A properly working cache and download manager that supports resume goes a long way.
I could never get Docker to work on my ADSL when it was 2 Mbps (FTTN got it up to 20) though it was fine in the Montreal office which had gigabit.