People model using BSP’s, it’s not uncommon so don’t be just coming in and saying your doing it all wrong. 1. I know BSP is not optimized, it is used for gray boxing/3d design. 2. I am not a ****** I’m not leaving it in BSP. 3. Your response was not even close to an answer to my question. 4 I am designing it in BSP and making it a static mesh, but that has nothing to do with BSP’s having disappearing acts, and lastly the tires, axel, and frame are already a static mesh and there is only 3 BSP’s in that image the bottom floor and the 2 half’s of the dash board. Saying that something should disappear when you don’t interact with it is the most unintelligent response I have ever heard in my life. I would ask you not to respond to this thread again and leave it to someone who has a clue.