So, I have everything on max and just played through the prologue.
There were three moments where the game kicked my ass: The very first scene you see on boot up(I think it's just literally a shot of a mirror),and the close up of a reflection on a soldier's helmet.Ishmael moving your body as you see the first soldier gun down the hospital worker
Otherwise it's been rock solid 60 for gameplay with the (very) rare dips during cutscenes. The last three stuck out to me though because they were particularly extreme dips, anywhere from 30s to, I think I straight up saw the number 9 at one point. The reflections I can understand, although I don't really know what the hell was going on to cause a drop during the Ishmael moment. If it keeps popping up in cutscenes, I guess I'll try to lower post processing or something.
Otherwise, GZ levels of performance with even crazier visuals. Great port, at least as far as performance is concerned.
i5 4570
GTX 980
12GB RAM
SSD
Windows 10
So, I guess as a small update, I'm 20 hours into the game, and the only time I've noticed the framerate drop beyond the prologue was once. But that once was a major once. The minor cutscene for the very first time your chopper drops you in Africa
(Mission 13)
I'm guessing much like the other moments my framerate tanked, that was a weird bug that a bunch of people experienced and not necessarily tied to what I had my settings set to(I tested the mirror/soldiers helmet/
Ishmael moving your body
Otherwise, locked 60 oohhh yeah.