VXGI-4.14 is 905.4 MB
VXGI-4.15 is the latest version and is 911.4 MB
I doubt there are any other legit downloads for this but you could use the git command line tools or github desktop to download it.
Also note that when you start the next step by running setup.bat multiple more gigabytes will be downloaded (approx 4GB off the top of my head)