When using the node Along Curve together with camera culling and random index in materials, I encountered an issue where the material flickers in the render.
This is a complex problem and is often related to the Along Curve setup: when instances reach the end of the curve, they are recreated, which causes their IDs to change. Camera culling can further amplify this behavior.
The solution is as follows: camera culling should be placed at the end of the node chain, and material randomness should be handled via a custom attribute rather than relying on instance IDs.
Below you can see how this problem can be solved.
