Thanks for the tip for Conan Exiles profile. Z3D seems to work well as intended.
The ghosting you describe is a normal artifact of Z3D unfortunately, as the images being reproduced have to guess how to fill in the gaps by mimicking the pixels around them. It’s faking 3D from flat image information.
This halo effect is only very noticeable for things very close to you, but otherwise it works quite well to give the world depth. You can decrease the focal distance setting as well as the weighting to minimize this effect, until you find a balance between 3D strength and acceptable halo. Some games fare better than others in this regard.
Shadow of the Tomb Raider also has native Side by Side 3D support if you’d rather play it in real G3D (without the ghost halos). There are a couple profiles on the cloud you can try. See here.