Only allow certain area of the navmesh to rebuild itself

Hi,

So I am having performance issues because when opening a door the navmesh rebuild itself causing the game to lag (the map is quite big).

So I was wondering if there is a way to tell the navmesh to only rubuild where it is told to?

Instead of rebuilding navmesh, associate a navlink with the door. Enable the navlink when the door is open, disable when it’s not.