PSOPrecache States

By default you will only get “PSOPrecache: Unknown” if you haven’t turned on precaching validation.

“PSOPrecache: Unknown” in Insights.

“PSOPrecache: Unknown” in Insights.

You can turn on PSO validation tracking with r.PSOPrecache.Validation.

From PSO Precaching Documentation.

From PSO Precaching Documentation.

Additional Resources

Setting up PSO Precaching & Bundled PSOs for Unreal Engine

Optimizing Rendering With PSO Caches in Unreal Engine