Import model settings

material

Model Tab
Unity Performance Optimization
Grid
Windows Player settings

Meshes

1. Mesh Compression
   sets the compression level to reduce the grid size (occupies less disk space), which will reduce the accuracy of the grid, and will not reduce the memory used during runtime. The compression ratio
   can be adjusted according to the situation.
2. Mesh Read/Write
   can be turned on to read mesh data, but it will increase memory, and it is not turned on by default
3. Generate Colliders
   uses the imported mesh to automatically add Mesh colliders; moving geometry should be avoided
4. Optimize Mesh
   determines the order in which triangles are listed in the mesh to improve GPU performance, the default is fine

ProjectSettings/Player/Optimization

1. Vertext Compression
   is a setting that affects every mesh in the project. It allows you to use lower precision data formats in the grid.
   This will reduce the size of the mesh data in memory, reducing file size slightly, and possibly improving GPU performance.
   Potential disadvantage is loss of precision
2. Optimize Mesh Data
   Enable this option to strip unused vertex attributes from the built mesh. This option reduces the amount of data in the grid, helping to reduce build size, load time, and memory footprint at runtime.