I have spent days looking for a fix to the double vision I get in Skyrim dungeons any time there is a strong shadow as happens around camp fires but I haven’t found a single post so I wanted to share the fix I confirmed works.
Just exit Skyrim,
open the SkyrimPrefs.ini file in your Documents\My Games\Skyrim folder,
and change the value of fInteriorShadowDistance=3000.0000
to match the fShadowDistance=4000.0000
For instance, in my case I changed the 3000.000 to 4000.000
Then restart the game and the shadows should work correctly in dungeons now.
If I had to guess I think Vorpx is using a single setting for textures but the two different settings for shadows. This is causing the shadows in interior areas to appear floating in space which is very dizzying.