NVIDIA Profile Inspector Download Version 184.108.40.206
Run NVIDIA Profile Inspector - then under section 2 - SYNC AND REFRESH you can turn on frame rate cap - some say to cap this at your monitor refresh rate - but dont use in game vysnc. You'll need to run this and apply changes (top right corner) before opeing up your game... Under the profiles tab - there is also a profile for DAYZ that you can select and then hit apply - not sure what all that tweaks.
Maybe there's a way to turn of fog in that thing
Also there is another program included called nvidia inspector which gives you all your specs on your card and also a overclock and fan control tab.