Ok I’m here back again,
The problem seems fixed now. I’m running MSI Afterburner while playing to test and these are the data from it:
MFS Graphics: Full Medium. Flight: LEAL to LEIB (Spain, about 30min)
GPU temp: 72º, 70 to 95% of usage (inside towns or in the middle of the sea)
Video Memory: 3500Mb
CPU Temp: 65-70º
(Also, I’m playing while using Chrome, watching Twitch, etc.)
What I did was:
- Full cleaning of my PC (it has a “some” dust and also the thermal paste was totally expired)
- Reinstalled the game in a specific folder instead of the default from Microsoft.
I bet its more because of the huuge difference of temperature, but who knows.
Hope this solutions remains and don’t crashes again xD
Have good flights captains (and sorry for my bad english, I’m from Spain! 
)