Hi Luca
I'm not with Laminar Research, just a fellow simmer in the UK, but it would be useful if you could upload the X-Plane 11 Log.txt file to this Q&A post, for everyone to assess and try to understand what is happening to cause the reported crash?
The owner of the PC will have to do this as the Log.txt file is on his/her PC.
The PC specification looks fine, so it is unlikely to be a hardware issue, unless it is something to do with the monitor/s and screen resolution?
Regards