The moving camera can be due to the "Smoothing" setting in IPGMovie. These settings can be found in IPGMovie under Camera > Smoothing.

A high smoothing makes the movement of the camere look more dynamic. This can be relavant for recording demo videos for example.

For driving simulators with the camera placed inside the vehicle as driver's view or cameras that simulate camera sensors, this can appear unrealistic. Therefore the smoothing should be turned off for such use cases.