ZBrushCentral

Correct display reolution for retina display machine?

Hello, Ive been trying to figure out how to adjust the display resolution of Zbrush for a retina display (1800p) it seems to just be displaying at 900p by default. Cant seem to find a solution online or figure it out for myself.

OS?
Display Device?
etc?

1800p will mean slowdown. Zbrush is more dependent of resolution than other programs as the 3d is not using the 3d card.