Speeding Up Rendering with Fast Styles
If you apply a style created in SketchUp 2014 or earlier, the Fast Style doesn't display the badge until you force the style to update once in SketchUp.
A Fast Style disables a style's more taxing effects — that is, settings that require additional processing and slow down SketchUp as your model becomes more complex. If any of the following settings are enabled, then the style will lose its classification as a Fast Style and the badge will no longer appear.
Profiles
Depth Cue
Extension
Endpoints
Jitter
Sketchy Edges
X-Ray with Transparency: Medium
X-Ray with Transparency: Nicer
Transparency: Medium
Transparency: Nicer
Every face style, including X-Ray, with Transparency set to Medium or Nicer will lose the Fast Style classification. The one exception is the Wireframe face style, which remains a Fast Style with any Transparency setting.
Tip: Additional settings, such as the Fog and Shadow settings, may affect a model's performance. If you're still seeing slower performance in SketchUp, see Improving Performance