The A340-600 Pro has a maximum simulation rate of 4x due to the custom flight model and systems. This is to ensure aircraft stability when a higher simulation rate is in use. If you are running below 30 fps, we do not recommend using a simulation rate higher than 2x to avoid the above issues.
[A340-600 Pro] Can I use a simulation rate higher than 4x on the A340-600 Pro?
