Version 1.9 features performance improvements for editor preview visualizations. Enabling these previews could cause significant delays in the graph editor, especially when working with large 3d meshes. This update brings a level-of-detail solution that significantly reduces these delays.
As a second change, a loading screen for graphs is now shown during application startup. It is now possible to select the correct workspace(s) to load. In older versions, all workspaces were loaded. This could make it impossible to start procedural studio if a file was corrupted
Version 1.9.0 Release
Source: Steam Community (opens in a new tab)