Autodesk Forge, how to change the rotation speed, translation speed and zoom speed of the scene?

customers think that the rotation speed of the mouse drag model is too fast, including the mouse wheel zoom speed, and want to slow down.
is there any control in the forge? Where can I find api? I can"t find it

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Thank you ~

Apr.07,2021

the speed of the scene is the speed of the camera. First find the camera, and then assign
viewer.autocam.userPanSpeed=100000

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