Emmanuel:
Here is a "best" render of two simple rooms with on the left exported/imported French windows, and in the middle the original French windows. On the right you can see the room with the original windows.
1 - In the left room the lower part of the scene isn't rendered. This also occurred in the "fast" test-render I did.
2 - The loss of light is clearly shown in the left picture.
Hans
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Hans
Ryzen 7-9700X, 32 GB RAM, 500 GB SSD, 2x 2 TB SSD, Geforce GTX 1060 3 GB
