I have a strange issue that I hope you can help me with 
When baking a lightmap for a big scene - I get some strange circles on some floors.
The lighting is made from a couple of baked Area lights in the ceiling as you can see on the screenshot. Every where i use the Area light with a Rectangle shape these cicles appears in the baked lightmap. They are 0.3 x 1.5 in size.
Other areas in the scene where i have smaller light 0,2 x 0,2 everything looks great.
This does indeed look unexpected. Could you file a bug report with that scene (or a problematic section of it) attached? I tried quickly slapping together a similar scene but wasn’t able to reproduce the issue.
I think I found out what to change to fix the problem. The circles was also in a different part of the basement, which was a closed area, so it was easier to turn of all lightning and create some new area lights to see, if the prefab was the problem.
The issue was the same, but it was a lot quicker to bake this area alone and do some testing.
It all came down to the range. If the range was 3 it created the circles - if I put i to the default 10 the lightning was without the circles.
ah, actually that makes perfect sense. I forgot we even gave area lights range parameter, it’s a bit unintuitive
Just to make sure I understand the range parameter correctly? The area lights always have normal light attenuation, but the range just cuts off the lighting entirely from the selected distance? I though it was smart to set the light range to fit the rooms in terms of depth, but it should just have a large value instead?
Yeah, I believe that is correct.
