Can't stop crashing all of a sudden..

Development Getting Started & Setup
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1

Hi,

For some reason, my project started crashing randomly. Then it began to crash even before opening, until I removed following from my DefaultEngine.ini

[/Script/WindowsTargetPlatform.WindowsTargetSettings]
DefaultGraphicsRHI=DefaultGraphicsRHI_DX12

  Below is one of the crash report from UE4

Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/D3D12RHI/Private/D3D12Util.cpp] [Line: 684] pResource->Map(Subresource, pReadRange, reinterpret_cast<void**>(&pData)) failed at D:\Build++UE4\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12RHIPrivate.h:1181 with error DXGI_ERROR_DEVICE_REMOVED with Reason: DXGI_ERROR_DEVICE_HUNG

UE4Editor_D3D12RHI
UE4Editor_D3D12RHI
UE4Editor_D3D12RHI
UE4Editor_RenderCore
UE4Editor_RenderCore
UE4Editor
UE4Editor
UE4Editor
UE4Editor_Core
UE4Editor_Core
UE4Editor_RenderCore
UE4Editor_RenderCore
UE4Editor_Core
UE4Editor_Core
kernel32
ntdll

       I tried opening in UE5. But also crashed soon after, with the following report.

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 691] Array index out of bounds: 0 from an array of size 0

UnrealEditor_GeometryCache
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_RenderCore
UnrealEditor_RenderCore
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

       I've been changing drivers, changing TDLR settings, no dice.

Is this some sign of my 3070 dying?

Thanks,
T

2

This is most likely a geometry cache playback issue.

Alembic has always been a little wonky.