enlighten lightmap got black spots for objects at far distance

Unity Engine
1

I am pretty sure the setting is correct and those boxes are the same one, I just changed their position from 100 to 2500, and I will get this weird black spots

I did multiple tests and I realized the only difference is the transform, if I move the BOX to somewhere beyond 2000, the shadowmap will start to have some black spots

Is there anyone have similar issues?

BOX at transform: x100, y0, z0
5826166--617554--upload_2020-5-10_0-58-53.png

same BOX at transform: x2500, y0, z0
5826166--617551--upload_2020-5-10_0-58-32.png

5826166--617566--upload_2020-5-10_1-2-44.jpg
5826166--617566--upload_2020-5-10_1-2-44.jpg1407×833 227 KB

5826166--617548--upload_2020-5-10_0-57-39.png

2

I see you already got a reply here Progressive CPU Lightmapper page-17#post-5837707

3

Hello ! It could be a float precision problem. Can you try increasing the pushoff values ? You can find it in Lightmap Parameters.
Also I haven’t been able to reproduce on newer versions of unity, is upgrading a viable solution for you ?