I have already said this in the update thread but since nobody ansered yet and I think this issue is too important I made an extra thread for it.
The new Moebius version (2.0) has much better anti aliasing and works great. However vsync is not working anymore which you can clearly see if you watch the opening cut scene - there is screen tearing clearly visible. I tried the GOG version of the game and after seeing this I reinstalled my backuped older Moebius version and there vsync works. Please fix this because I cannot enjoy great cut scenes if they have screen tearing. I have also tried to force vsync and it did not work. (Win7/64 - GTX960).
I'm sorry to hear that you're having issues. We are currently working on an update for GK and Moebius which we hope to have out in January. These will be using newer versions of Unity and the video plugin, which should help. I know the code forces VSync to be on due to walking calculations, so it is there...