Can anybody help me figure out why my emitter objects are passing through each other?

[tone-art]

I'm using c4d 2025.2.0

I have a simple object (thin cylinder) that's cloned onto an emitter, they are supposed to be stacking like poker chips. About halfway through my scene, the chips start passing through the other chips in the stack. It only happens on my render, In the viewport everything seems fine.

I've already made sure the substeps were increased in the project settings. I've tried caching / baking the simulation. Nothing seems to work. If you could help me or offer advice that would be appreciated.

Here's a look at my render:
https://streamable.com/v06iea

This is what my viewport looks like:
https://streamable.com/ryzzwe

My object stack:
https://ibb.co/84tZ4Pm2

062825_Chips_Test.c4d

[Dr. Sassi]

Hi tone-art,

Please check this file if it works for you - render-wise.
CV4_2025_drs_25_MGbl_01.c4d

It appears that the changing ID based on the Legacy Emitter is causing some issues. The idea here is to have a fixed number of Clones, while switching on the Bullet Dynamics of your scene at a specific point for each Chip.

Please let me know how that works for you.

All the best