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Unreal Engine C++ API Reference > Runtime > NavigationSystem > NavMesh > ARecastNavMesh
Syntax
int32 TileNumberHardLimit
Remarks
Absolute hard limit to number of navmesh tiles. Be very, very careful while modifying it while having big maps with navmesh. A single, empty tile takes 176 bytes and empty tiles are allocated up front (subject to change, but that's where it's at now)
TileNumberHardLimit is always rounded up to the closest power of 2