TRD Loading Screen v3 is the release published by Rwix. The original post links to its Tebex distribution and describes config.js settings for server name/tag, music, background video or image and default volume. Follow that source to confirm the current package and terms.
Setup and checks
Inspect the downloaded resource manifest before choosing its start command; the forum text does not establish the exact folder name. Test your selected media, volume and connection transition. Keep performance claims separate from measured loading results on your own server.