when I transfer large step file,it takes long time.

[Jaeel]

Reading a STEP file..
Tessellating..
Writing an X3D file..
Indent Count
indent 1 - 1
Number of Materials: 2
Number of Shapes: 1
MinXYZ: -0.1043 -0.0008 -0.0398
MaxXYZ: 0.1031 0.1495 0.0387
STEP to X3D completed!
Total time elapsed: 10 minutes 26 seconds

the file is 17216kB.

[soonjokwon]

The time differs depending on the model, hardware, etc.
It is usually the OCC API code that makes the time long, not STP2X3D-specific code.
Sometimes, importing a STEP file happens to take a lot of time abnormally.
Can you attach the model here? I want to test it too and I may be able to analyze it.