Same issue since patch 3 as well. I ended up turning down my power maximum to 95% in nVidia App and haven't crashed since. Same as everyone else, though, in that I don't have problems with any other game.
Possible still a PSU issue and something in patch 3 pushed the power usage more than any other game.
So I eventually crashed even at 95% further along the way consistently in the Lighthouse after a story mission. So I tried something different -- I actually put power maximum back to 100%, even did the auto-tune for overclock in nVidia App, just to see if i could get it to crash "faster", and while ironically it actually took longer to crash then the previous 3 times, it would still crash.
So I then set a 60 FPS frame limit in nVidia App for DAV and haven't crashed since. Perhaps something in patch 3 either raised a frame "soft cap", or if it ends up rendering too many frames too fast it's running into some kind of race condition or power spike? Not sure. Don't want to claim victory yet, but did want to share my findings.
I'll give it try. They just released U4, but nothing about the crashing issue in the patch notes. So I'll give them both a try
