Rover: How can I remove the fade in function of an image in the banner?

Template: Rover

For example, I have an index page as my homepage - the first page (at the top of the index page) has an image in it's background (I added the image as Media in the page settings - not as a floating image within the page itself), and when the site opens, it seems the image loads or fades in (while everything has already loaded).

I thought it was related to the image size at first but I think it's more of a fade in function as it does this on my other index pages as well.

Please help,Thanks

We can provide the exact fix if you can show your current site url (with password if you preferred)