Hi, in current PhotoScan Standard (1.4.1), when opening a psx projet, if the latter contains a 3D mesh, PhotoScan will select and display it by default. This mesh can dozens of millions of polys and can stall the machine for long seconds before the project opens. Subsequently, every operation in Photoscan will take an enormous amount of time before proceeding until we select another objet such as a point or sparse cloud. Please do NOT select and open any mesh by default when opening a project !