How far in are you? I felt the same until I got to the largest island, when performance completely tanks. Just gliding over towns or bases kills the frame rate, with no shooting or explosions happening. It goes into full-on slow motion, and it's really bad.It's by no means a 'slideshow' like others are claiming here - been watching my partner play through it and it doesn't seem that bad at all outside of some jerkiness in big explosive chains.