GC when updating graph for doors with off-mesh links

General Recast graph
1
  • A* version: 5.4.4
  • Unity version: 6.1

Here is some code that is run when players open or close doors:

GraphUpdateObject guo = new GraphUpdateObject(NavmeshGUOCollider.bounds) {
    modifyWalkability = true,
    setWalkability = State != (int)DoorState.Closed,
    updatePhysics = false
};

AstarPath.active.UpdateGraphs(guo);

// Set the doors off-mesh link to only affect the tag-specific graphs
ink.graphMask = GameController.Instance.Map.TagsGraphMask;

// Activate the off-mesh link when the door is closed
Link.enabled = State == (int)DoorState.Closed && !IsLocked;

// This seemed to be required to prevent path failed warnings on clients on game load. I guess it forces the graph to be updated immediately with the link changes made above.
Link.Apply();

And here is a deep profile screenshot showing the sources of GC:

Unity_t6pzsTpPQb
Unity_t6pzsTpPQb1232×404 67.1 KB

Is there any way for me to avoid this GC? Doors can be opened/closed very often by players or AI creatures.