As far as I know, these points appear when you have Dynamic Subdivision enabled and there are sharp angles in the geometry. Check the geometry tab for Dynamic Subdivision. Sometimes people enable it by accident when pressing D.
Hi guys, just started using marmoset and trying to figure out how the lighting handles. The problem i have is switching on GI leads to light leaking through floors etc. See the pictures, the first has no GI and the second has GI enabled. There are floor and ceiling polys there to block light. Its only when I enable GI the…