Your demo page is 3.23 MB. ~500KB is javascript, ~500KB is CSS and another ~400KB is web fonts. The parts database is 24 KB. That's certainly not the first place I would look for an optimization target, even for customers with very large parts databases.
With respect, I believe you are mistaken about what my important use cases are like.
Not going to go into details, but that JavaScript, CSS and fonts are all immutable assets, never to be requested again, while the database is significantly larger for clients who run their businesses using this software.
