World partitioned level and navmesh

Hey, I have a problem with navmesh at the world partitioned level. I am using this guide: World Partitioned Navigation Mesh | Unreal Engine 5.7 Documentation | Epic Developer Community
Navigation is present and working in the editor, but unfortunately it is not present in the navigation build. The AI are standing still because there is no navmesh.
I have a 2x2 map. It is a city. There is a navmodifier on the roads and pavements. I also use navfilters. Everything is set up the same as in the Epic guide. If I use dynamic nav, it works. But then the fps drops significantly.
Could someone tell me what might be causing this navigation to not exist in the build if want to use static?

Hello there @HiImGh0st!

Checking around the community, issues similar to this one have popped up from time to time. An extended thread suggested using dynamic runtime navmesh generation for the streamed level (or multiple levels). The result should be that, when your level streams in, the navigation system generates the navmesh for the level. For full details on how to build the setup (and also improve its performance), please check the resources below: