it may gets crash at any time,especialy when i use the material editor.
i`ve got the log:
[2017.11.25-02.15.32:354][551]LogD3D11RHI:Error: Result failed
at D:\Build++UE4+Release-4.15+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Viewport.cpp:289
with error DXGI_ERROR_DEVICE_REMOVED DXGI_ERROR_DEVICE_HUNG