How to improve maya's rendering speed

Maya's rendering speed is very slow, which can be optimized in the following aspects:

First, reduce the use of memory.

1. Use BOT (Block Ordered Texture) to cache texture maps.

Use BOT pre-rendering settings

2. Delete the information irrelevant to the renderer

3. Render each part of the scene separately.

4. Strategies to reduce the file size of vector rendering

Second, optimize the scene size.

Third, improve the rendering speed of camera view.

Fourth, improve the speed of shadow rendering.

Fifth, speed up surface rendering.