Cloner Actors Randomly Not Rendering in Sequencer (UE 5.5.1, Mac M4 Max)

Hi everyone,

I’m experiencing a frustrating issue with rendering sequences that contain Cloner Actors in Unreal Engine 5.5.1.

The problem:
• In one of my sequences, I have multiple Cloner Actors, but at every render, some of them randomly fail to appear in the final output.
• In another sequence, I only have one Cloner Actor, and it never appears in the rendered frames.
• However, when playing the sequence in the Sequencer preview window, everything works fine—every Cloner Actor is properly activated and visible.

What I’ve tried so far:
1. Extended the sequence duration to allow more time for Cloners to “load” (not sure if this helps, seemed to work at first but not consistently).
2. Changed render resolution from 4K to Full HD, but the issue persists.

System specs:
• MacBook M4 Max
• 16-core CPU
• 40-core GPU
• 16-core Neural Engine
• 128 GB Unified Memory
• Unreal Engine Version: 5.5.1

Has anyone encountered this issue before? Are there any known fixes or settings that could affect Cloner Actors in Sequencer?

I’ll attach some screenshots of the scene if that helps.

Thanks in advance!