D3DDevice times out and crashes Editor

Hi,

when using the 4.11 Editor, my screen sometimes shows vertical lines with strange patterns. While running the Editor from Visual Studio, I got this:

[2016.04.02-08.33.02:405][643]LogD3D11RHI: Timed out while waiting for GPU to catch up. (0.5 s)
D3D11: Removing Device.
[2016.04.02-08.33.02:748][643]LogD3D11RHI: Init due to bDeviceRemoved
[2016.04.02-08.33.02:748][643]LogD3D11RHI: CleanupD3DDevice
Fatal error: [File:D:\BuildFarm\buildmachine_++UE4+Release-4.11\Engine\Source\Runtime\Windows\D3D11RHI\Private\Windows\WindowsD3D11Device.cpp] [Line: 421] 
The Direct3D 11 device that was being used has been removed (Error: -2005270521 'RESET').  Please restart the game.

I experienced this kind of behavior now 3 or 4 times already.

Seems like the renderer just crashed. I have an ATI Radeon HD 7970 with AMD Crimson 16.3.1.
The crimson Software also crashed when I wanted to start it after this.

[EDIT]
Just now it hapenned again. First the screen was flickering between normal and the vertical lines, then my screens just turned a color and the whole PC freezed. (btw, I have a dual monitor setup)

[EDIT2]
Ok, now it crashes every time in 3 different projects on Engine version 4.10.4 and 4.11. I tried to update my graphics driver to 16.3.2 to no avail. I appended a crash log. The only thing I changed in the last couple of days was to update Visual Studio 2015 with Update 2.

The log just stops in the middle when the whole PC crashes: Log File

[EDIT3]
Completely reinstalled 16.3.2, but it did not help. As of now, I cannot use Unreal Engine at all on my desktop PC. It crashes the whole PC within a minute. On my laptop, which uses a NVIDIA graphics chip, everything is working fine. The strange thing is, I did the Battery Collector tutorial over the last 2 weeks with 16.3.1 and everything was working flawlessly, no crashes. Then, after I downloaded 4.11, at first the screen was flickering, showing strange artifacts and sometimes it only crashed the editor. Windows could recover. Since today, it crashes my whole PC (see this picture).

[EDIT5]
Wow, just now it crashed from the Epic Launcher. No editor open or anything from a fresh-booted PC. Wanted to remove 4.11 to see if this helps.

So I found out what the problem was: When it started happening in other games, too, and I got some glitches in the boot screen it was obvious that this had nothing to do with UE. My graphics card was dusted or wasn’t plugged in correctly. After cleaning and reinstalling it, everything worked again.

Sorry for the false alarm. It was just coincidence that it started with the new version of the Unreal Engine.