CREATING REAL TIME ANIMATED PREVIEWS IN 3DS MAX

As your scene becomes more complicated you cannot always expect 3ds max to play the animation back at the correct frame rate.

To access this tool you create preview animation, Shift+v can also bring this up.

You are thus able to edit your playback settings for the animation.
Your output will allow you to alter your compressor.

Thus allowing you to see the animation playback at the correct speed.
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You can playback the preview at anytime you wish and also you can see if your animation is fully correct.