DayZ is really not a great experience on Linux. Not only the FPS are significantly worse compared to Windows, the VRAM leak will lead to some very frustrating moments where you are forced to restart the game while in action, while driving a car, etc. How often you have to restart will depend on the amount of VRAM you have and what your are doing in-game. I have 10 GB VRAM and while driving a car around Chernarus, I had to restart every ~30 minutes or so, which is unnaceptable.