Glitch when loading a full-screen row

Hi folks,
If you go to the home or features pages at the site, you’ll notice it initially loads with a standard row width, then expands to the full stretched row.
I only see this with Siteorigin widgets — not on the other pages, where I’m not using SO.
Any suggestions to force the page to load the full width, without the intermediate step of the standard width?

URL: http://meros.io