How to handle 3D model optimization and API loading for open-world games?

Hey everyone 👋

I’m working on a small open-world superhero game project (something like Rope Hero) and trying to figure out the best way to handle 3D model loading and optimization through APIs.

I’ve read a bit about using async data fetching for models and textures, but I’m not sure what’s the most efficient approach to keep things lightweight while maintaining quality.

Does anyone here have experience with streaming 3D assets dynamically or managing API-based level loading in real time? Any tips or frameworks you’d recommend?

Also shared a few related notes on this topic here → ropeherohub.com

Would love to hear your thoughts!