I think the problem is related to the sea floor... when the floor is not visible, fps is fine. When the floor comes in sight, it starts to get really bad. I have tried to reduce shadows, but that only gives me 2-5 frames back. I have also disabled the "Detailed Caustics Mod", as I suspected it to cause this...
I also have high AA, but its not a problem at all as long as the camera stays over the water. I can't get my head around the question what makes the FPS so much worse under water. It doesn't even look like it!!!
Where can I disable sun rays? I'd like to try that.
Thank you!
It is really frustrating! My computer should be able to handle much more with no problems! Hell, I am running ARMAII with around 40 Frames without any problem!