@AlphaWolF Everything which resembles an open environment for VR needs a lot of careful tweaks, even more because of the performance constraints to have at least 90+FPS per eye. Your stuff can have Tessellation, but the material graph needs to be made in order to allow it only when closer look or inside the cabin. Every single foliage item you placed by hand can have increased performance if you select all of them and use the function Merge Actors (basically all will become one single mesh and one single material) no matter how far they are, which is also great for rocks hand placed. You can do for all of them or do it in groups. The better is the quality of the textures and the better is their resolution, the better are the results.