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When use "Project Loose Geometry" or "Create Spaces From Diagram" that geometry is put onto a non-visible layer in SketchUp, but is never saved in the OSM file. If you quit SketchUp and re-open the OSM (without also loading a SKP file) they should be gone, but that probably isn't why you are seeing performance issues. As @Julian Marrec mentioned this is a large model.

Here are a few general SketchUp Plugin tips to make sure you get the best performance

• Make sure the Outliner window isn't open
• Don't turn on Shadows
• Keep the line style simple
• If you have been in a SketchUp session for days, quit and then re-start SketchUp

Tips for large model in OS app

• Multi select helps, but on a very large model it will still have slower performance. If you want to for example apply ideal air loads to all zones, use a measure that can be run using "Apply Measures Now".
• Also as @Jullien Marrec mentioned avoid tabs you don't need to go to, in particular ones like spaces, zones and surfaces which will have tons of objects in your model.

I do think it is worth looking at the building you are representing to see if 500 zones are necessary, same for the number spaces, surfaces, and sub-surfaces. Developing the skill to abstract your model so it isn't too big but still provides enough detail for an 'accurate' energy model takes time but is invaluable and will save you tons of stress and sleep.

When use "Project Loose Geometry" or "Create Spaces From Diagram" that geometry is put onto a non-visible layer in SketchUp, but is never saved in the OSM file. If you quit SketchUp and re-open the OSM (without also loading a SKP file) they should be gone, but that probably isn't why you are seeing performance issues. As @Julian Julien Marrec mentioned this is a large model.

Here are a few general SketchUp Plugin tips to make sure you get the best performance

• Make sure the Outliner window isn't open
• Don't turn on Shadows
• Keep the line style simple
• If you have been in a SketchUp session for days, quit and then re-start SketchUp

Tips for large model in OS app

• Multi select helps, but on a very large model it will still have slower performance. If you want to for example apply ideal air loads to all zones, use a measure that can be run using "Apply Measures Now".
• Also as @Jullien Julien Marrec mentioned avoid tabs you don't need to go to, in particular ones like spaces, zones and surfaces which will have tons of objects in your model.

I do think it is worth looking at the building you are representing to see if 500 zones are necessary, same for the number spaces, surfaces, and sub-surfaces. Developing the skill to abstract your model so it isn't too big but still provides enough detail for an 'accurate' energy model takes time but is invaluable and will save you tons of stress and sleep.

When use "Project Loose Geometry" or "Create Spaces From Diagram" that geometry is put onto a non-visible layer in SketchUp, but is never saved in the OSM file. If you quit SketchUp and re-open the OSM (without also loading a SKP file) they should be gone, but that probably isn't why you are seeing performance issues. As Julien @Julien Marrec mentioned this is a large model.

Here are a few general SketchUp Plugin tips to make sure you get the best performance

• Make sure the Outliner window isn't open
• Don't turn on Shadows
• Keep the line style simple
• If you have been in a SketchUp session for days, quit and then re-start SketchUp

Tips for large model in OS app

• Multi select helps, but on a very large model it will still have slower performance. If you want to for example apply ideal air loads to all zones, use a measure that can be run using "Apply Measures Now".
• Also as Julien @Julien Marrec mentioned avoid tabs you don't need to go to, in particular ones like spaces, zones and surfaces which will have tons of objects in your model.

I do think it is worth looking at the building you are representing to see if 500 zones are necessary, same for the number spaces, surfaces, and sub-surfaces. Developing the skill to abstract your model so it isn't too big but still provides enough detail for an 'accurate' energy model takes time but is invaluable and will save you tons of stress and sleep.