Hi, after I worked a lot on trying to build a game and finished the coding part I started to build levels particularly kits like Future Warfare and HighTech streets, Elysium, Oasis, Medieval Siege and others that I have most important: 1. There is no collision; 2. Even if you see interiors there are no proper holes in the models to pass in them so no interiors; 3. Instanced meshes do not exist if you have multiple same doors in the models you import hundreds of doors chairs tables also materials total buzzkill from the point of view optimization. 4.Static Meshes origin should be properly made so you could use the static meshes independently of blueprints.