Hey
I have been trying to solve this for a day, couldnt figure it out.
I recently upgraded my project from 5.1 to 5.6 to get some of that new optimization updates and it really worked and helped out. I think i got an increase of 20-30 FPS.
I have to optimize my game further and I am trying to learn insights.
I created HLODs of the landscape in 5.1 after many efforts and I finally got it working but after the upgrade they werent looking right.
I tried to BUILD HLOD in my existing MAIN MAP with WORLD PARTITION I am getting the following error:
[ btw in a brand new open world map the HLODs build just fine. ]
LogWorldPartitionEditor: Warning: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.25:511][ 0]LogSpawn: Warning: SpawnActor failed because we are in the process of tearing down the world
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:290][ 0]LogWindows: Error: === Critical error: ===
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:290][ 0]LogWindows: Error:
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:291][ 0]LogWindows: Error: Fatal error!
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:291][ 0]LogWindows: Error:
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:291][ 0]LogWindows: Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x000000000000027c
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:291][ 0]LogWindows: Error:
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:291][ 0]LogWindows: Error: [Callstack] 0x000001954ea579fc UnrealEditor-WorldPartitionHLODUtilities.dll!FWorldPartitionHLODUtilities::CreateHLODActors() [D:\build++UE5\Sync\Engine\Plugins\Editor\WorldPartitionHLODUtilities\Source\Private\WorldPartition\HLOD\Utilities\WorldPartitionHLODUtilities.cpp:220]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:291][ 0]LogWindows: Error: [Callstack] 0x00007fff17dd27b9 UnrealEditor-Engine.dll!TStaticSpatialIndex<TObjectPtr<UWorldPartitionRuntimeCell>,FStaticSpatialIndex::FSpatialIndexProfile3D,FStaticSpatialIndex::TRTreeImpl<FStaticSpatialIndex::FSpatialIndexProfile3D,16,64>,FStaticSpatialIndex::TNodeSorterHilbert<FStaticSpatialIndex::FSpatialIndexProfile3D,65536> >::InitSpatialIndex'::5’::<lambda_2>::operator()() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\RuntimeSpatialHash\RuntimeSpatial
HashHLOD.cpp:223]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:291][ 0]LogWindows: Error: [Callstack] 0x00007fff17dfc474 UnrealEditor-Engine.dll!FSquare2DGridHelper::ForEachCells() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\RuntimeSpatialHash\RuntimeSpatialHashGridHelper.cpp:102]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:291][ 0]LogWindows: Error: [Callstack] 0x00007fff17e024f3 UnrealEditor-Engine.dll!GenerateHLODActorsForGrid() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\RuntimeSpatialHash\RuntimeSpatialHashHLOD.cpp:270]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:292][ 0]LogWindows: Error: [Callstack] 0x00007fff17dd3348 UnrealEditor-Engine.dll!TStaticSpatialIndex<TObjectPtr<UWorldPartitionRuntimeCell>,FStaticSpatialIndex::FSpatialIndexProfile3D,FStaticSpatialIndex::TRTreeImpl<FStaticSpatialIndex::FSpatialIndexProfile3D,16,64>,FStaticSpatialIndex::TNodeSorterHilbert<FStaticSpatialIndex::FSpatialIndexProfile3D,65536> >::InitSpatialIndex'::5’::<lambda_2>::operator()() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\RuntimeSpatialHash\RuntimeSpatial
HashHLOD.cpp:518]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:292][ 0]LogWindows: Error: [Callstack] 0x00007fff17e4cc43 UnrealEditor-Engine.dll!UWorldPartitionRuntimeSpatialHash::SetupHLODActors() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\RuntimeSpatialHash\RuntimeSpatialHashHLOD.cpp:541]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:292][ 0]LogWindows: Error: [Callstack] 0x00007fff17ea08e6 UnrealEditor-Engine.dll!FWorldPartitionStreamingGenerator::ResolveContainerDescriptor'::2’::<lambda_1>::operator()() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionStreamingGeneration.cpp:2291]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:292][ 0]LogWindows: Error: [Callstack] 0x00007fff17f1007d UnrealEditor-Engine.dll!UWorldPartition::SetupHLODActors() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionStreamingGeneration.cpp:2307]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:292][ 0]LogWindows: Error: [Callstack] 0x00007fff1440f518 UnrealEditor-UnrealEd.dll!UWorldPartitionHLODsBuilder::SetupHLODActors() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\WorldPartition\WorldPartitionHLODsBuilder.cpp:329]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:293][ 0]LogWindows: Error: [Callstack] 0x00007fff1440bb0b UnrealEditor-UnrealEd.dll!UWorldPartitionHLODsBuilder::RunInternal() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\WorldPartition\WorldPartitionHLODsBuilder.cpp:269]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:293][ 0]LogWindows: Error: [Callstack] 0x00007fff1440a313 UnrealEditor-UnrealEd.dll!UWorldPartitionBuilder::Run() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\WorldPartition\WorldPartitionBuilder.cpp:296]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:293][ 0]LogWindows: Error: [Callstack] 0x00007fff1440b094 UnrealEditor-UnrealEd.dll!UWorldPartitionBuilder::RunBuilder() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\WorldPartition\WorldPartitionBuilder.cpp:129]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:377][ 0]LogWindows: Error: [Callstack] 0x00007fff132b429a UnrealEditor-UnrealEd.dll!UWorldPartitionBuilderCommandlet::RunBuilder() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Commandlets\WorldPartitionBuilderCommandlet.cpp:295]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:377][ 0]LogWindows: Error: [Callstack] 0x00007fff132915a7 UnrealEditor-UnrealEd.dll!UWorldPartitionBuilderCommandlet::Main() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Commandlets\WorldPartitionBuilderCommandlet.cpp:191]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:378][ 0]LogWindows: Error: [Callstack] 0x00007ff619918fa0 UnrealEditor.exe!FEngineLoop::PreInitPostStartupScreen() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:3860]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:378][ 0]LogWindows: Error: [Callstack] 0x00007ff61990e39c UnrealEditor.exe!GuardedMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:143]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:378][ 0]LogWindows: Error: [Callstack] 0x00007ff61990e6ba UnrealEditor.exe!GuardedMainWrapper() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:128]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:378][ 0]LogWindows: Error: [Callstack] 0x00007ff61991209e UnrealEditor.exe!LaunchWindowsStartup() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:282]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:379][ 0]LogWindows: Error: [Callstack] 0x00007ff619924e44 UnrealEditor.exe!WinMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:339]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:379][ 0]LogWindows: Error: [Callstack] 0x00007ff6199280fa UnrealEditor.exe!__scrt_common_main_seh() [D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:379][ 0]LogWindows: Error: [Callstack] 0x00007fffe0447374 KERNEL32.DLL!UnknownFunction
LogWorldPartitionEditor: Error: #### COMMANDLET OUTPUT >> [2025.06.14-12.29.30:379][ 0]LogWindows: Error:
LogWorldPartitionEditor: Error: #### END COMMANDLET OUTPUT ####
complete log : https://drive.google.com/file/d/1zpVfFSQHbdMzsQ_Lb1DpT-_R5L_LoOgB/view?usp=sharing