Solved
The Sims Medieval makes my computer crash
So, I can't even play the game. After the startup cutscene, I can see the start menu for a split second before my computer abruptly shuts down completely, then restarts on his own.
It pretty much ...
So I finally managed to launch and play the game. All I did is reinstalling the game, shut down some useless programs and launching the game.
As I can clearly hear "cool whine", especially in the menus, it had indeed something to do with overheating, as the game tries to run the Sims too fast. The game had a pop-up explaining it doesn't recognize my graphics card, which can also explain the issue. I maxed out the graphics options and it got better.
I have yet to know what exactly caused the problem to stop (my guess in on the DVR option of the Xbox app for Windows 10), but at least I can play now !
