Sorry I didn't realise that the render scenes where saved with each file.
I just tested and it seems they are.
So the settings must be the same in both versions apart from anything that Graphisoft have changed.
So it could well be from the merging specular and reflection in reflectance but I couldn't say for sure.
I don't do a lot of rendering myself and I am not really using version 20 yet.
However I will see if I can run some test files later to see if I have the same issue.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
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