Use a low pass filter to reduce the influence of sudden changes in a quaternion Variable.
Quaternion Variable
quaternion Variable to filter. Should generally come from some constantly updated input
Filtering Factor
Determines how much influence new changes have. E.g., 0.1 keeps 10 percent of the unfiltered quaternion and 90 percent of the previously filtered value.
Every Frame
Repeat every frame. Useful if any of the values are changing.
Every Frame Option
Defines how to perform the action when 'every Frame' is enabled.