Which prototype? It sounds like you used a DK1, where the SDE (screen door effect) was very pronounced. The DK1's resolution is 1280×800@60hz.
The DK2 is 1920x1080@75hz, and the CV1 (subject of OP) is 2160×1200@90hz. I'm sure the SDE is still perceptible in the CV1 if you look closely enough, but most reports say it is no longer an issue.
Yap it was DK1. Well, that's good to know. I didn't follow u after that much. We moved on from that project, and now I am at a different company altogether. But they'll probably revisit it next year or so. It was just an experimental "let's see what we can do with this" thing and we decided to wait till next generation.
The DK2 is 1920x1080@75hz, and the CV1 (subject of OP) is 2160×1200@90hz. I'm sure the SDE is still perceptible in the CV1 if you look closely enough, but most reports say it is no longer an issue.