Any advice for 4.16 engine crashes after VR preview?

Development Platform & Builds XR Development
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1

In normal use of UE4.16, it works fine. However, after playing and quitting the VR preview it’s like the editor is in some danger zone where a crash could occur at any moment. I’m having trouble finding cause/consistency. I’m using an Asus - ROG GL502VM 15.6" laptop. Below is the crash report that’s auto-copied to my clipboard.

"Fatal error: [File:D:\Build++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Util.cpp] [Line: 327] SwapChain->ResizeBuffers(1,SizeX,SizeY,RenderTargetFormat,DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH) failed at D:\Build++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Viewport.cpp:220 with error DXGI_ERROR_INVALID_CALL, Size=678x173 Format=DXGI_FORMAT_R10G10B10A2_UNORM(0x00000018)

KERNELBASE.dll!0x000000004F879D98 UE4Editor-Core.dll!0x000000001187AFFE UE4Editor-Core.dll!0x000000001169249B UE4Editor-Core.dll!0x0000000011620849 UE4Editor-D3D11RHI.dll!0x00000000F8278C65 UE4Editor-D3D11RHI.dll!0x00000000F8271447 UE4Editor-SlateRHIRenderer.dll!0x00000000F8037F7C UE4Editor-SlateRHIRenderer.dll!0x00000000F804DFB8 UE4Editor-Slate.dll!0x000000001616347A UE4Editor-Slate.dll!0x000000001612AB80 UE4Editor-Slate.dll!0x00000000161897B2 UE4Editor-Slate.dll!0x0000000016188A55 UE4Editor.exe!0x00000000AC5DED59 UE4Editor.exe!0x00000000AC5CF0B0 UE4Editor.exe!0x00000000AC5CF12A UE4Editor.exe!0x00000000AC5E0CF9 UE4Editor.exe!0x00000000AC5E25F7 KERNEL32.DLL!0x0000000050172774 ntdll.dll!0x0000000052570D51 ntdll.dll!0x0000000052570D51 "

I don’t have any issues running other VR software or even packaged versions of the game. Only when using VR preview in editor do I have issues. Any thoughts on what could be causing this and/or what I can do to avoid this?

2

Had this exact issue a lot on 4.17.x and I am still having it from time to time on 4.18.x. I am also on an Asus ROG, so it could very well be Asus specific, but I cannot tell for sure.

Things that seemed to work for me:

  • Uninstall all Asus apps that could interfere with DirectX, especially Sonic Studio II
  • Reduce CPU overclocking
  • Update the Graphic Drivers to the very latest version
  • Increase Windows TDR delay time

This may be a coincidence, but some of my crashes happened after the Oculus application issued a warning about the Guardian System not working properly. Usually repeating the Oculus setup procedure fixed it.

3

Yeah, I’ve seen similar suggestions on other questions like mine. I figured that since I hadn’t enabled any ASUS sonic stuff, it wouldn’t be running, but I was wrong. Sonic Studio II was apparently always on in some capacity. After noticing it in my hidden icons on the taskbar, and making it exit/quit, I’ve been crash free for about 24 hrs. I hesitate to consider this issue solved, but I’m hopeful. Unless I get a crash between now and tomorrow night, I’ll mark this post resolved.

4

Sonic Studio II was apparently always on in some capacity. After noticing it in my hidden icons on the taskbar, and making it exit/quit, I’ve been crash free for about 24 hrs. I hesitate to consider this issue solved, but I’m hopeful. Unless I get a crash between now and tomorrow night, I’ll mark this post resolved.