navmeshを設定したsublevelをロードするとクラッシュします。

いつもお世話になっております。
現在下記の現象で困っております、どなたかご存知でしたらご教授ください。

MachineId:976D691641E029DF1497C7ABA1B9BE90
EpicAccountId:38a11f822d784cbbb7157242bac177a4

Access violation - code c0000005 (first/second chance not available)

UE4Editor_Navmesh!dtNavMesh::addTile() + 110 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\navmesh\private\detour\detournavmesh.cpp:1526]
UE4Editor_Engine!URecastNavMeshDataChunk::AttachTiles() + 261 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\ai\navigation\recastnavmeshdatachunk.cpp:143]
UE4Editor_Engine!ARecastNavMesh::OnStreamingLevelAdded() + 509 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\ai\navigation\recastnavmesh.cpp:1445]
UE4Editor_Engine!UNavigationSystem::OnLevelAddedToWorld() + 186 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\ai\navigation\navigationsystem.cpp:3077]
UE4Editor_Engine!TBaseUObjectMethodDelegateInstance<0,UNavigationSystem,void cdecl(ULevel * ptr64,UWorld * ptr64)>::ExecuteIfSafe() + 243 bytes [d:\buildfarm\buildmachine++depot+ue4-releases+4.7\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:772]
UE4Editor_Engine!TBaseMulticastDelegate::Broadcast() + 172 bytes [d:\buildfarm\buildmachine
++depot+ue4-releases+4.7\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:1030]
UE4Editor_Engine!UWorld::AddToWorld() + 1938 bytes [d:\buildfarm\buildmachine
++depot+ue4-releases+4.7\engine\source\runtime\engine\private\world.cpp:1727]
UE4Editor_Engine!UWorld::UpdateLevelStreamingInner() + 550 bytes [d:\buildfarm\buildmachine
++depot+ue4-releases+4.7\engine\source\runtime\engine\private\world.cpp:2254]
UE4Editor_Engine!UWorld::UpdateLevelStreaming() + 592 bytes [d:\buildfarm\buildmachine
++depot+ue4-releases+4.7\engine\source\runtime\engine\private\world.cpp:2306]
UE4Editor_Engine!UGameViewportClient::Draw() + 3865 bytes [d:\buildfarm\buildmachine
++depot+ue4-releases+4.7\engine\source\runtime\engine\private\gameviewportclient.cpp:932]
UE4Editor_Engine!FViewport::Draw() + 1223 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\unrealclient.cpp:995]
UE4Editor_UnrealEd!UEditorEngine::Tick() + 8339 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\editor.cpp:1515]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() + 22 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\unrealedengine.cpp:347]
UE4Editor!FEngineLoop::Tick() + 4179 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launchengineloop.cpp:2257]
UE4Editor!GuardedMain() + 1404 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

他の質問を調べた結果下記のものが同じものでは無いかと思いますが、「Fixed Tile Pool Size」をどうやって設定すれば良いのかわかりません。

よろしくお願いします。

自己解決しました。

一度この状態になった場合、サブレベルのナビゲーションボリュームを全て削除して作りなおしたら解決しました。

個々のレベルでナビゲーションボリュームを作成していたのでそれがサブレベルになったときにクラッシュの原因になったのでは?と思われます。