How to set up nav mesh on larger maps?

[Aikirob]

Hello everybody,

I have a rather large map with a nav mesh bounds volume encompassing it, I have navigation invokers on my ai and player pawns, but the navigation mesh will not generate, how do I set up the navmesh bounds volume and the settings in project settings to make the navmesh actually generate on a large map?
a small nav mesh bounds volume around the player generates navmesh but one encompassing the whole level does not.