How to speed up model in Blender for 3D models?

To speed up 3D model work in Blender, optimize viewport settings, reduce geometry complexity, and manage resource-heavy elements like textures or modifiers. Switch to "Solid" view or lower viewport shading quality for faster previews; use the Decimate modifier to cut polygon count on non-critical parts. Compress textures or set distant objects to display as bounding boxes—for characters, decimate unused details (e.g., small clothing folds); for environments, hide unused objects or use instancing for repeated props. If your scene lags, enable "Simplify" in Scene Properties > Performance—this temporarily lowers detail to keep Blender responsive without altering your final model.