The upload worked. I’m not seeing broken lines. I do see the attic window isn’t showing all the edges because you have multiple faces doing the z-fighting thing. I also see some bleeding edges on the roof gables at either side.
The window is easily fixed by tracing edges and deleting the extra faces.
(I also see some exposed reversed faces when switching the face styly to Monochrome.)
In some scenes there is more of the bleed through. Rafters in this view for example.
Turning off the tag for the rafters will fix that.
Other than that I’m not seeing anything unexpected.
I did my usual checks for other things. Some incorrect tag usage.
Plenty of unused content to purge.
I wonder if any of the graphics artifacts you are seeing could be due to the model not being at the origin.