Substance Painter has two modes for saving a project:
- Incremental: faster and not resulting in an optimal file size.
- Full (Compact): slower and resulting in an optimal file size. It corresponds to a defragmentation and a removal of useless files of the project.
Most of the times, the save is incremental unless a clean is done and the next save is in Full mode. The aim is to speed up the saving process.
Save & Compact
Click on File > Save And Compact to save the Substance Painter project in Full (Compact) mode and reduce the size of the project.