(edited by Auruan.2837)
FPS issue - Breaking the Bone Ship
I experienced very low FPS during this mission, too.
The framerate dropped to slideshow levels as I looked at the closest line of Risen mines, all of which had a complicated (and completely pointless) particle effect surrounding them. If those mines were not on my screen, the framerate was good. After some time the particle effects disappeared completely, bringing the framerate to decent levels again.
I don’t know what was the point of the particle effects, besides demonstrating the engine’s incomprehensibly low performance at rendering such things.
I had exactly the same problem, when I learned over the water at the bone ship 10FPS, when I turned around solid 60 with vsync.
I know I don’t have a screaming fast intel, but AMDs latest processors (FX 4170) should not perform this terrible in game.