HowTo/Scenery/mesh-table/animation-loop-speed
From TrainzOnline
amination-loop-speed
This is an optional tag and only needs to be used if there is an animation for the asset. If it is used then the tag "anim" must also be used.
Data type for this field is a floating number i.e. 1.0.
This is the speed at which the original animation exported from the asset creation software (blender, gmax etc.) will play at in trainz. 1.0 represent it will play at the original speed of the animation. 0.5 means it would play at half the speed and 2.0 would means it would play at double the original speed.