However sharing the video as a plain video file without having the Nikon software on your PC for sure is not viewer friendly at all and just about dizzying like walking through a house of mirrors with funny shapes and distortions

Placing lenses in a way they are perpendicular to the sun (to avoid difference in white balance in two stitched halves) b. Keeping distance of at least 1.5 meters from an objects, which you are trying to shoot - it would help to avoid that ugly distortion

May be fun, if that's all you are looking for, but stitch lines, really bad compression, low resolution, and weird distortion .. unacceptable!

When I compared to my theta S, its worse than theta at low light condition but better at outdoor

I recommend a Theta S, its better and cheaper