With Blender – Open Solid, files are loaded in Solid mode irrespective of how the viewport was last set, optimizing workflow when opening blend files.

Nikita Akimov – Open Solid Blender Features

• By default, switch the viewport to “Solid” when opening new .blend files.
• This reduces the lag time that may occur when textures load and shaders compile, for example, in large or complex scenes.
• Enhanced Performance and Responsiveness:
• Improved loading time of .blend files, including those saved while “Material Preview” mode is active.
• It functions with any structure of a .blend file, regardless of the viewport in which it was saved.
• More stimulation of working proficiently while switching between diverse projects is achieved.
• It does not require any manual steps to be performed by the user.
• The add-on works and remains active and unattended.

Blender – Open Solid Overview

Image 1: Reduces delays from loading textures and compiling shaders, even in large or complex scenes.

Image 2: Automatically switches the viewport to “Solid” mode when opening new .blend files.