yes, sorry, I should have gone back to English.
I said that also in Dutch I have no clue what those 'G-powers' mean. So the problem wasn't even the language appearantly. But he/she said that it might be that the rollercoaster goes too fast in corners so that's also something that I'm gonna check. So it's still not solved but as soon as I have time I'm gonna try all the suggestions here. If I still can't make it I'll send screenshots