When it was released, I have used the ornithopter and it was really performant on my PC, in any situation. Today, I tried again and I have an issue. When using the boost, my FPS drop from ~80 to 13. Otherwise, my install works really well. I use many aircraft without any issue. I have deleted the ornithopter and reinstalled it. No luck. I have reverted to an old nvidia driver. Same.
Any idea?