Artifacts using Enlighten Lightmapper

Hello everybody,

When I try to bake my shadows, I get ugly artifacts where objects are inside one other (no AO), using Enlighten (image_1 and image_2). There are no problems using Progressive Lightmapper (image_3 and image_4), but I need Mixed Lighting, baked shadows with real-time shadows, which doesn't work with PLM. It looks like Enlighten doesn't blur the shadows below, or lightmap anti-aliasing is not working. I have tried everything in the lightmap settings, also I've played around with the Lightmap Parameters, still nothing. This is a test scene, with default cube primitives. Using Unity 2017.2.0. Do you have any advice, how this can be fixed?

Thanks!

 

What is the setting of the backface tolerance in your lightmap parameters?

 

Above images are baked with Backface Tolerance 0, both on Enlighten and PLM, but I've tried with 0.1, 0.2 ... 0.9 , 1 etc. and there's almost no difference, outer edges are jagged (with Enlighten).