@disneyandcoMy settings are as high as possible. Have you tried building something in the manage world mode? On a lot that does not belong to your household. Because then it does not matter which time of the year you have. The light at noon is brighter. Cause after I realised it worked with the highest settings I went back to my household and suddenly it looked like it doesn't work, again. But it actually did. In spring, the light is not as bright and so it is darker inside. So you have to look very closely. Sometimes you only see the effects on one of the walls. If the light comes from the left side, you only see the effects on the opposite wall. I am sorry, I can't describe it as good as I want to because English isn't my first language.