so in most games that have demanding graphics like crysis or arma 2, I noticed that when looking straight down or up the FPS sky rockets. I have 2 XFX HD4850s and I was wondering is there any remedy to fix this.
Exactly. Your FPS will change dramatically depending on what the GPU is required to produce.
If it's just a plain sky or a simple pattern on the ground your FPS will increase quite a bit, there's really nothing you can do about it and it is normal operation.