ppf.esm (and Project Nevada as a whole) is considered obsolete and problematic . The modding community has largely moved on to lighter, more stable alternatives.

: Ensure you aren't missing any DLC requirements. Some versions of PPF require all official DLCs to function. AI responses may include mistakes. Learn more Conflicts with the PRP | Sim Settlements Forums

ppf.esm should generally be loaded early in your load order, typically after the official DLCs and the Unofficial Fallout 4 Patch, but before large city overhaul mods. Troubleshooting: "ppf.esm Contains Dirty Edits"

It corrects broken vanilla precombined geometry headers that, if left unpatched, can cause crashes in specific, rare situations.