How can I force the Triple Buffering?

[SixelAlexiS]

Hi, the problem is that the game use an Double Buffering Vsync, so whenever the game drop a bit under 60FPS the framerate is locked to 30FPS, and this is really annoying...

Is there any way to froce Triple Buffering, please?
I would continue to enjoy the game but not in this state

I have an AMD 280x card, thank you!