I have a solid 60 fps whilst running open fields, sometimes more, very smooth, high settings. Then all of a sudden the game stutters and drops to 40fps and works it's way back up again to 60fps and all is normal. This process then repeats every 2--30 seconds.
This is quite annoying as I have never been able to work out what causes this problem. I have tried ramdisk, closing all memory intensive programs in the background. I have tried to dial my settings all the way down to low and I still have this issue.
I do use fraps to check the framerate, however, it is not recording.
This problem has always been there on the Mod, Arma 3 and now Dayz.