Hey, so sorry for the delay! Looking at your new logs and dmp, they confirm that even with the extra checks added, the exact same crash occurs which shows unexpected behaviour of the D3D API, as alluded to previously. The fix will require engine team work, so please if you could work with TJ to get the info required.
I would however like to continue to try getting you un-blocked, and to have a bash at getting you running opengl. Previously the opengl would crash when you add the arg, but i have a fix for that particular issue. I’ve attached the missing opengl shaders (usually only shipped with mac) that you can drop into your launcher installation. Once unzipped, you should end up with the following files:-
C:\Program Files\Epic Games\Launcher\Engine\Shaders\StandaloneRenderer\OpenGL\SlateElementPixelShader.glsl
C:\Program Files\Epic Games\Launcher\Engine\Shaders\StandaloneRenderer\OpenGL\SlateVertexShader.glsl
When you have that, try running the launcher with just the -opengl arg again. Let us know how it goes.link text