I told you to be patient. You let your file get out of control and it’s very slow to work with.
I did my usual cleanup. I did not remove anything from the model that is being used. That said, there is a lot of incorrect tag usage in the model. Probably mostly due to import CAD linework but also clearly not all.
I also purged unused stuff from the model. You are hoarding a lot of components and materials that aren’t needed.
Of the materials that are being used there are some ridiculously huge texture images. Even for a model destined to be rendered there’s no need for texture images to be so large.
If you’re going to render this model you should fix the incorrect face orientation. You should fix that even if you aren’t going to render the model. There should be no visible blue back faces.
I have not removed the materials in the model. I just set the Face Style to Monochrome so you can see the faces that need correcting.
BTW, if you don’t need the import CAD linework anymore, delete it from the model and purge unused stuff. Or if you don’t need all of it, remove the geometry that isn’t needed to simplify your model. I would also suggest that you comb through the objects in the model to see what you can clean up and reduce.Things like this screen around the door could probably be done with a texture image and that would reduce the load.
Here’s the link to the file. It’s still a huge file but hopefully your computer will be able to manage it. I’ll leave it for two hours and then I need to clear it out.