Happy Day

原片：https://search.bilibili.com/all?keyword=%E3%80%90%E5%9B%BD%E5%A4%96%E5%8A%A8%E6%80%81%E5%9B%BE%E5%BD%A2%E8%AE%BE%E8%AE%A1%E3%80%91London%20Move%20-%20Motion%20Piece%20-%201.1%28Av12410473,P1%29&from_source=banner_search

Arnold怎么优化渲染啊