Поправил мой ответ.
Отсюда:
answers.unity3d.com/questions/919940/applicationlo...
The fix is to go to Window -> Lighting -> Lightmap Tab -> Disable Continuous Baking -> Press Build to bake the lighting once manually. And now the lighting remains consistent. Original: forum.unity3d.com/threads/application-loadlevel-ap...
Надеюсь это поможет.
