DX12 version won't start

DX11 version works ok but DX12 version crashes just before the intro movie (where the game logo is reconstructed)

Most of the time it crashes to desktop or a few times it reboot the computer.

I've tryed full screen and windowed mode. I've check the" skip movie" box in the option while in the DX11 version as the 2 versions seems to share the same settings.

I've deleted the settings.ini file in mygames/ashesofsingularity. I've check the steam cache integrity. No success

------------------
System Information
------------------
Time of this report: 8/20/2015, 23:44:36
Machine name: PC
Operating System: Windows 10 Famille 64-bit (10.0, Build 10240) (10240.th1.150810-2333)
Language: French (Regional Setting: French)
System Manufacturer: ASUSTeK COMPUTER INC.
System Model: G551JM
BIOS: G551JM.204
Processor: Intel(R) Core(TM) i7-4710HQ CPU @ 2.50GHz (8 CPUs), ~2.5GHz
Memory: 8192MB RAM
Available OS Memory: 8076MB RAM
Page File: 2907MB used, 6447MB available
Windows Dir: C:\WINDOWS
DirectX Version: 12
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 120 DPI (125 percent)
DWM DPI Scaling: UnKnown
Miracast: Available, with HDCP
Microsoft Graphics Hybrid: Supported
DxDiag Version: 10.00.10240.16384 64bit Unicode

------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Display Tab 2: No problems found.
Sound Tab 1: No problems found.
Input Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name: Intel(R) HD Graphics 4600
Manufacturer: Intel Corporation
Chip type: Intel(R) HD Graphics Family
DAC type: Internal
Device Type: Full Device
Device Key: Enum\PCI\VEN_8086&DEV_0416&SUBSYS_185D1043&REV_06
Display Memory: 4150 MB
Dedicated Memory: 112 MB
Shared Memory: 4037 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: unknown
Monitor Id: LGD042C
Native Mode: 1920 x 1080(p) (60.020Hz)
Output Type: Internal
Driver Name: igdumdim64.dll,igd10iumd64.dll,igd10iumd64.dll,igd12umd64.dll,igdumdim32,igd10iumd32,igd10iumd32,igd12umd32
Driver File Version: 10.18.0015.4256 (English)
Driver Version: 10.18.15.4256
DDI Version: 12

Card name: NVIDIA GeForce GTX 860M
Manufacturer: NVIDIA
Chip type: GeForce GTX 860M
DAC type: Integrated RAMDAC
Device Type: Render-Only Device
Device Key: Enum\PCI\VEN_10DE&DEV_1392&SUBSYS_185D1043&REV_A2
Display Memory: 8075 MB
Dedicated Memory: 4037 MB
Shared Memory: 4037 MB
Current Mode: n/a
Driver Name: nvd3dumx,nvwgf2umx,nvwgf2umx,nvwgf2umx,nvd3dum,nvwgf2um,nvwgf2um,nvwgf2um
Driver File Version: 10.18.0013.5560 (English)
Driver Version: 10.18.13.5560
DDI Version: 12
Feature Levels: 11.0,10.1,10.0,9.3,9.2,9.1
Driver Model: WDDM 2.0
Graphics Preemption: DMA
Compute Preemption: DMA
Miracast: Not Supported by Graphics driver
Hybrid Graphics GPU: Discrete
Power P-states: Not Supported
Driver Attributes: Final Retail
Driver Date/Size: 8/7/2015 13:07:03, 15627520 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: n/a
Vendor ID: 0x10DE
Device ID: 0x1392
SubSys ID: 0x185D1043
Revision ID: 0x00A2