There is a known issue (feature?) when using Architectural units that the ~ indicating that the displayed measurement is rounded isn't shown when both feet and inches are present.

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You understand that sketchup is a single thread app right? If you do then you're talking about stuff out of my league

@unknownuser said: This kicks in way too early - often on models that the camera could previously easily orbit, zoom without degradation - is there a way to disable it or adjust the settings? In the preferences dialog under OpenGL, disable "Use fast feedback" to stop components degrading to a wireframe representation of their bounding box on camera movement. Disabling this will also increase your view refresh time. I think that both "full_detail_render_delay_min" & "full_detail_render_delay_max" both relate to the fast feedback setting wrt wireframe bounding boxes? Regardless of the fast feedback setting, textures will still turn off and on based on the "full_detail_render_delay_min" & "full_detail_render_delay_max" settings. -niall