Once again I opened your file and was able to reproduce an artefact. Not exactly the same as yours, but similar, and not easily explained.
This is what I did:
- open file
- switch to Aerial View
- select Create Photo
- set quality to Q3
- render image --> there is a small artefact above the window
Then I did the following
- zoom in on the house using the scroll wheel on my mouse
- make another photo --> there is a small artefact above the window
Both images were made WITHOUT changing the view by rotating the image
After slightly rotating the 3D image, the artefact persists. It's the same in all pictures. (Q3 - 400x400 pixels)
NOTE
I checked wall heights (okay), level heights (okay), wall textures (none), etc. I couldn't find anything out of the ordinary.
NOTE 2
When I delete the two windows under the roof and insert them again, the artefact has disappeared.
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Hans
new website - under constuction
hansdirkse.info
