It's not area specific, in the way that it only happens at for example: NWAF. I've had it happen West of Krasnostav, in the middle of nowhere etc.. But it does seems to be area specific in the way that when it happens it's like a "bubble" around you that you have to get out of in order to regain FPS. When you've gotten out of the "bubble", it usually works fine running through the same area again, with no loss in frame-rate.
{F45535} <-- Information from Dxdiag about my system. (My CPU is overclocked to 4.2 Ghz)
{F45536} <-- Copy of my DayZ.cfg file
**QUALITY:**
Objects: **Normal**
Terrain: **High**
Clouds: **Low**
Shadows: **Low**
**USER INTERFACE**
Resolution: **2560x1440x32**
**TEXTURES:**
Video Memory: **Auto**
Texture Detail: **Very High**
Texture Filtering: **Very High**
**RENDERING:**
Anti-aliasing: **Low**
Alpha to Coverage: **All Trees + Grass**
Edge Smoothing: **FXAA Very High**
HDR Quality: **Very Low**
Post-Process Quality: **Normal**
Ambient Occlusion: **Enabled**