Steps to reproduce:

1. Create new project and set editor to DX9
2. Update NVidia drivers while editor is open
3. After drivers are updated notice that Unity editor doesn't render anything
4. Force-quit editor and open Editor.log
5. Notice that it's spammed with: HandleD3DDeviceLost: still lost

6. Rollback drivers
7. Re-open editor but this time in DX11
8. Update drivers again
9. Notice that editor crashes
10. Open Editor.log and notice few asserts printed before crash:
SUCCEEDED(hr)
(Filename: C:/buildslave/unity/build/Runtime/GfxDevice/d3d11/D3D11Window.cpp Line: 215)
SUCCEEDED(hr)
(Filename: C:/buildslave/unity/build/Runtime/GfxDevice/d3d11/D3D11Window.cpp Line: 215)
D3D11: Failed to create RenderTexture (1075 x 451 fmt 44 aa 1), error 0x887a000)
(Filename: C:/buildslave/unity/build/Runtime/GfxDevice/d3d11/RenderTextureD3D11.cpp Line: 308)
SUCCEEDED(hr)
(Filename: C:/buildslave/unity/build/Runtime/GfxDevice/d3d11/RenderTextureD3D11.cpp Line: 622)
SUCCEEDED(hr)
(Filename: C:/buildslave/unity/build/Runtime/GfxDevice/d3d11/RenderTextureD3D11.cpp Line: 636)

Reproduced with: 5.1.4f1, 5.2.4f1, 5.3.5p4, 5.4.0b22