Hi Lucas,
Thanks for sharing the repro project. I was able to verify that the PSOs are indeed being missed currently in the engine. I’ve filed a ticket with the engineering team to review the current PSO Precaching coverage in the engine and add your suggestions. Having chatted with some of the devs, FCustomDepthPassMeshProcessor, FVolumetricCloudRenderViewMeshProcessor, FVolumetricCloudRenderShadowMeshProcessor, and UVolumetricCloudComponent should be pretty straightforward to add. Still, we must evaluate how many PSO variations we will add. As for the other mesh processors, it will take some more time to get them properly added.
Unfortunately, due to how our Jira is set up, I cannot share a public tracking link with you. However, I will try to get you any updates on this effort as soon as possible. If you have any more questions, please don’t hesitate to let me know.