Hi everyone. I bought Preper3D v4 yesterday. I did the setup then i opened the p3d. The first everything was normal but when i change the camera p3d was down. Before the change camera 120fps but after the change camera 4 fps, and at the same time when i change the camera, the sound is interrupted. Also I fly to an airport nearby in virtual cocpit view about 120fps, when i was landing again 4fps. Whats the problem? Thank you...