Yeah it is worse on these stairs which use a mesh collider but it still happens with just simple box colliders on simple walls as well. Im getting ready to attempt to put in a break point where Justin recommended next. I just went through the layers and the walls, ceiling and roof are set to that and set properly on the character layer manager. I have tried many settings on the collision radius and collision anchor offset and for right now its at -1 with .5 .5 .5 on the latter. These settings kinda stop it from going through the wall but not great. And the player can still walk up to the wall, at least see the wall now, but then just right click and zoom and see into the next room. Its like none of my walls, ceilings or floor work with the v3 of opsive. Let me get this break point setup, I had several other things to fix before I could get to this point.