If you use 0 to set your hertz, BMax will use your desktop's refresh rate,
I haven't found this to be the case. If I set the hertz to 0 in full screen mode my monitor is switched to 60 hertz regardless of resolution, only in windowed mode does it use my desktop's refresh rate.
Can someone else confirm this behaviour or is it just my system?
I just downloaded the Windows demo today but spent several hours with it so I don't think I'm missing some detail.