Check out the "C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\logs\launcher_log.txt" file. I suspect there's a line like this one every time the time the game "crashes":
I think I'm getting more crashes than you, even 1 blackscreen that needs me to hard reset my cpu
After recruiting my first ded sec member, on the free roam I always getting crash 1-10 secs.
I run it on all ULTRA settings
Odd, I'm not getting denuvo errors yet am still crashing, tried everything that came to mind even going as far as removing overclocks on hardware and still nothing working.
Great, it seems that I also join you guys. As always, denuvo ruined things... Can't denuvo stop ruining all the games in which it is implemented? This is ridiculous...