i finded this using default filter in project point on navmesh sometimes
is crashing engine or freeze for solid 2-5 min or never is unfreezing
i thing it should throw a error not freeze or crash
main error
LogOutputDevice: Error: Ensure condition failed: AsAIController [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/AIModule/Private/Navigation/NavFilter_AIControllerDefault.cpp] [Line: 18]
log [link text][1]
Bp: Custom move to (broken) posted by anonymous | blueprintUE | PasteBin For Unreal Engine 4
(sorry for title google key wording :D)