Upgrading the project unity 4.6 to 5.1, I noticed some differences in the lightmap. Unity 5.1 seems to have softer shadows on lights than in 4.6, the directional light casting these shadows both have 0.35 shadow angle. However they also seem to be lower res, because of a strange squashing seen in the lightmap atlas. On the attached image you can see the 4.6 atlas on the left. The area marked is the ground, it matches proportions to how the groundplane actually is in the level. On the right you see the unity 5.1 lightmap atlas, which seems to be squashed together for some reason. Ideas? Mesh's lightmapper uvs created by unity in both cases. Same resolution and padding, both bakes resulted in 6x1024 lightmaps.