Dealing with Incorrect STEP Linear Unit Scale
From ATTWiki
- Back to VTube-STEP or VTube-LASER
How Wrong Scales Are Represented in STEP Files
If you attempt to calculate a centerline and find that the calculation takes much longer than usual, and the resulting values are extremely large, then there is probably a problem in the original STEP file setup.
For example, this STEP file imported the following values: