First time we did it we made sure to sit in the middle (always ask to sit in B1 - which is the front of the middle section so also no dangling feet in your vision) and prior to riding I had heard so much about the crazy distortion and how bad the CGI was - so maybe that set my expectations, but I found the distortion not that bad (really only noticed anything at all with the Eifel Tower) and really only one scene was the GCI that obvious to me (but again, i was anticipating it being a disaster)
Then I rode it from one of the side bays and the distortion was just atrocious - so never again!