Hi Herman - I'm sorry you're having this issue. I checked out the performance video and the auto scoll is working as expected on my end.
Try playing the video on a different device to see if the problem persists. If so, you can reach out and submit a request to GT Tech support at the following link:
https://support.guitartricks.com/hc/en-us/sections/203667227-Technical-Support
Mike
Keep rockin!
Mike Olekshy
GT Guitar Coach