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Go to Options from the Tools dropdown. In the "Options:Generalisplay"
open up the register "Performances" Here you should adjust the "3D Acuracy"
My best result is to set "Fixed" at 0.01. If your graphic card is powerful enough you shouln't notice any performance loss.
You can also experiment with the "Curve's Accuracy Ratio" I have mine set to
Fine tuning can be accomplished by playing with the "Level of detail" in the
area of "static" and "whilst moving".
As long as your models are not extra large and your graphic card is good you can obtain really realistic and accurate results.
Hope this helps