Virtual Texturing Feedback

I have another problem with RVT. When I open my project, some of the texture’s mip maps are black. When I move my runtime virtual texture volume actor, or change it in some way, it usually goes back to normal, but not allways or not everywhere. Interesting thing is that the my roads that are also baked onto the same RVT works fine. When I move my camera around, it seems to finally bake. Also. I have noticed that when I have this RVT on, it causes hitches during the game.