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Unreal Engine is exiting due to D3D device being lost

Hello, I run UE4, I get to do some stuff, but after a few minutes it crashes. The message:

 Fatal error: [File:D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Util.cpp] [Line: 182] Unreal Engine is exiting due to D3D device being lost. (Error: 0x887A0020 - 'INTERNAL_ERROR')
 
 UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
 UE4Editor_D3D11RHI!TerminateOnDeviceRemoved() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11util.cpp:192]
 UE4Editor_D3D11RHI!VerifyD3D11Result() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11util.cpp:231]
 UE4Editor_D3D11RHI!FD3D11Viewport::PresentChecked() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11viewport.cpp:289]
 UE4Editor_D3D11RHI!FD3D11Viewport::Present() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11viewport.cpp:472]
 UE4Editor_D3D11RHI!FD3D11DynamicRHI::RHIEndDrawingViewport() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11viewport.cpp:591]
 UE4Editor_RHI!FRHICommandList::EndDrawingViewport() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\rhi\private\rhicommandlist.cpp:1399]
 UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindow_RenderThread() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slaterhirenderer\private\slaterhirenderer.cpp:876]
 UE4Editor_SlateRHIRenderer!TGraphTask<TEnqueueUniqueRenderCommandType<`FSlateRHIRenderer::DrawWindows_Private'::`29'::SlateDrawWindowsCommandName,<lambda_43e86ee7c51f39979e9a39d40b280024> > >::ExecuteTask() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\async\taskgraphinterfaces.h:784]
 UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:650]
 UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:559]
 UE4Editor_RenderCore!RenderingThreadMain() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\rendercore\private\renderingthread.cpp:325]
 UE4Editor_RenderCore!FRenderingThread::Run() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\rendercore\private\renderingthread.cpp:459]
 UE4Editor_Core!FRunnableThreadWin::Run() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:76]

My GPU: AMD Radeon HD 8600M Series (drivers up-to-date)

I have tried UE 4.14.3 & 4.18, "r.gpustatsenabled=0" in ConsoleVariables.ini and disabling Real-Time Thumbnails, but it always crashes.

Sorry my misspellings, I do not speak very well English :D Best regards, ShE3py

Product Version: UE 4.18
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asked Oct 24 '17 at 04:26 PM in Using UE4

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ShE3py
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avatar image III47III Dec 27 '17 at 09:36 PM

I have the same problem. My only fix is uninstalling the AMD Radeon driver and using the integrated Intel GPU.

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