Fullwidth section background rendering

Hi There,

I opened this topic but didn’t get a reply now for a few weeks, so I thought I would add it as a new one.

When I load this page, the full width section first loads as standard page width, before rendering to full width – this doesn’t look great as looks like it’s flashing in and out and re-loading. Is there a way to stop the pages doing this for full width sections?

https://www.onlinearcheryacademy.com/recurve-archery-technique-stance-posture/

Previously an agent suggested using a site pre-loader but this delays the site load and doesn’t look great.

Thanks!