How to improve the accuracy of the PhysX simulation

[chrisucdos]

Try this: 
- substeps 50, and also, within your main settings in tyflow icon, there is a time step, increase it from frame, to 1/8 or 1/16 frame. 

How dense is geometry? If it's very low poly, it might go through other object. 
If that's the case (and the above doesn't help), try increasing polygon count.

Thank you very much for your help, but the effect of adding the parameters is too different. Tears

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You need to post more details about your scene.

thanks reply！You mean screenshots or uploading scenes？