The game has basically become unplayable for me. I can play for about 5 minutes and then slowly my fps start dropping till it gets to 1FPS and I can't open the menu anymore. I tried reinstalling the game and it hasn't helped.
I tried playing other games and this issue has only been happening in DayZ so I don't think it's my PC.
ASUS Rampage IV Extreme LGA 2011
Intel Core i7-3930K
PC Power & Cooling 750W
EVGA GeForce GTX680
OCZ Technology 128GB(installed slave drive)
32GB RAM
I have this problem too. I start the game and after a while my FPS becomes smaller and smaller. I noticed that my processor is loaded to 100% whan i have 1 FPS. This happened after last update.
the problem is from some items that gliches, most common from M4A1, some parts of it, like handguard start flickering (textures move) you can see it if you press tab. If someone is close with that weapon, your fps will go to 1-2 fps or even game freeze. Same happens if you have the weapon and someone comes close to you (even proximity, like 100m away).
Having a squad of 10 ppl and tested this.
Temportaly fix, till you relog, is to pain the flickering parts or change the parts that are bugged, handguard and buttstock.
buttstock bugged: http://dayz.gamepedia.com/M4_Buttstock_MP
handguard bugged: http://dayz.gamepedia.com/M4_Handguard_Plastic