Do you know if there is any DVD/Blu-ray authoring software (menu & navigation buttons
included) that will write a first generation DTS Audio soundtrack to disk?

example - https://www.sweetwater.com/store/detail/SurCodeDVDDTS

I have an uncompressed 323 MB 5.1 audio mix file
coming from Sound Forge Pro 11 that compresses to a 12 MB File when using the
old outdated AC3 encoder. I have all my settings maxed out in Magix's DVD Architect
Pro 6.0 before burning to a Blu-ray disk. Of course the uncompressed file is
far superior to the AC3 file when played back.