Eight months after opening, Universal Studios Hollywood has removed the 3D from the Harry Potter and the Forbidden Journey dark ride.
There is speculation that the 3D element may have been removed due to riders experiencing nausea from the combined effect of the film and the moving seats.
The Los Angeles Times reports that the theme park’s comments were brief: “We continually evaluate our theme park ride experiences, and enabling our guests to enjoy Forbidden Journey without the use of 3-D is one example of how we are assessing various opportunities.”
The older Harry Potter dark ride at Universal’s Islands of Adventure in Orlando, Florida, is not in 3D.
https://www.latimes.com/business/la-fi-3d-harry-potter-20161205-story.html