Substance memory budget.
This also affects the amount of working memory for the generation of the ProceduralMaterial.
| Tiny | A limit of 128MB for the cache or the working memory. |
| Medium | A limit of 256MB for the cache or the working memory. |
| Heavy | A limit of 512MB for the cache or the working memory. |
| NoLimit | No limit for the cache or the working memory. |
| None | A limit of 1B (one byte) for the cache or the working memory. |