Hi Marco,
Thank you for reaching out to us. I checked your page and couldn’t feel any difference. I then tried to replicate on my local setup with both the templates and the scrolling was just fine.
In my humble opinion, with no header and footer, the scrolling should be better as the page becomes lighter. Try clearing out your browser’s cache first and see if this helps. If it doesn’t then try testing for a plugin conflict. You can do this by deactivating all third party plugins, and seeing if the problem remains. If it’s fixed, you’ll know a plugin caused the problem, and you can narrow down which one by reactivating them one at a time.
If nothing works then can you please share a short movie clip of the issue you’re facing so we can take a closer look?
Thanks!