No 3D link with a Benq?

[performlabrit]

Hi guys, I'm trying to get my BenQ to display in 3d using 3D link, and i'm not having any luck.

The projector supports 60Hz Top-Bottom 3D for resolutions up to SXGA+.
http://www.benq.us/product/projector/MW870UST

Enabling viz.STEREO_3DTV_TOP_AND_BOTTOM produced two vertical stacked images. My assumption is that this means the projector is not correctly parsing the images according to the DLP-Link format, despite the fact that the project has "3D Sync" enabled.

There is very little info out there on the topic, so any help is appreciated.

To anticipate: I can't use NVidia Vision. Although I'm using a compatible NViDA GTX 690, the projector lacks the necessary dual link DVI-I in.