After some discussions with MS support , bringing my sim to what the called a “vanilla state” and delivering my DXDiag and MSInfo files the problem seems to be lying with my graphic drivers (Don’t know if SU8 changed anything but I’ll go with it)
Regular removal and reinstall of the driver (Nvidia’s latest is 511.79) the problem still came back, so I used the driver doomsday program, The DDU (you can download it from here : Display Driver Uninstaller Download version 18.0.4.9 .
Make sure you download your graphic driver into your download folder BEFORE using this program. After running DDU just make a fresh install of the driver.
This one worked for me and so far I had no crashes with the sim. Hopes it will work for you guys…