'Background Image' displays prior to page loading on hero

Hey there,

I’m noticing that when loading the site for the first time that ‘background image’ is flashing up for a few seconds and then the site loads properly with the background video (works fine once the site has been cached in the browser). The problem seems to appear more regularly on mobile. Any help would be greatly appreciated.


Here is my site Read-Only: https://preview.webflow.com/preview/gtm-venture-studio?utm_medium=preview_link&utm_source=dashboard&utm_content=gtm-venture-studio&preview=23e14535e45df2fceed0149839ff3f84&mode=preview