Force 2-Sided in viewport

[jacksc02]

So good old Autodesk appears to have removed the "Force 2-Sided" option in the viewport preferences in 2015.
Does anyone know how to turn it on/off?
Or am I blind and can't see the option?

[AJ Jefferies]

I hadn't even really thought about this in years, but the default for viewports in recent years is for geometry to be displayed '2-sided'. If it's not, then the object must have back face culling enabled which, if I remember correctly, is more taxing as the CPU has to handle it.

I could be entirely mistaken of course.

[jacksc02]

Yeah it is a very weird problem.
I actually have to turn backface culling on in the object properties for everything to display correctly.