RecastNavMesh drastically slows down level load!

Hello everyone! I noticed that my game is loading very slow, so I started a trace with Unreal Insights tool to see what causes this problem.

As you see, turned out that RecastNavMesh takes too much time to load! What should I do to reduce it’s loading time?

Some extra information:

  • Map in the game is really big (6x6 km)
  • GenerateNavigationOnlyAroundNavigationInvokers is checked
  • Runtime generation is Static