I’m using 3 models on my website.
At first, I have set the group’s Y position to adapt to the scrolling following this tutorial.
It was working well and the models were sticking and following the container and the text inside while scrolling up & down just like this:
Then I changed the all the models to 3 different models I downloaded from Sketchfab.
Just replaced the filename and didn’t change anything in the code.
Now, when I scroll up and down, the new models just blast really fast and only aligned in center when I scroll to the middle of the group container 
As you can see here in the gif, if I move just a little off the container, it will blast off the viewport:
They don’t stick with the container and text anymore.
I have tried other models but it just the same problem.
→ How to keep them stay with the text and container?
Have anyone encountered with this problem before?
Please help me out, thank you guys so much!!