3D Visualization Upgrade in Three.js

Upgrade a Three.js + Vite 3D Visualization Project to Match Desired Effect

Description:
Hello,

I’ve created a frontend 3D visualization project based on Three.js and Vite. The current version is functional — the first attached video ("Current effect") shows the result after running the existing code.

What I need:
Optimize and upgrade the existing code (packaged source files will be provided)
Final result should match the effect shown in the second video ("Goal outcome")

Key Requirements:
Work based on my current source code, not from scratch
Match animation, lighting, visual layout, and camera behavior as shown in “Goal outcome”
Make the project smooth, lightweight, and visually appealing
All code must remain compatible with Vite + Three.js stack

Deliverables:
Upgraded source code
A short README on how to run the upgraded version

Attachments:
Video 1: Current effect (actual code result)
Video 2: Goal outcome (target visual effect)

Skills Required:
Three.js
WebGL
Vite

JavaScript / TypeScript

Frontend animation or 3D scene optimization

Budget & Timeline:
could you take a look and see if you can do it? If you can, how long would it take to complete, and how much would you charge?