Overlay filter delay on background banner video?

Site URL: https://billhoran.com

Whenever my site loads on desktop, the mobile default image flashes for a second, then video starts. it's not a big problem because the overlay "dim" is applied the whole time.

On mobile (iPhone), the page loads and I see the mobile default image for a few seconds at full brightness, then the overlay dims it. Then, sometimes the video loads. It seems like that setting is loading later than maybe the rest of the page? It's really frustrating because I could make a dim default image, but it would get dimmer once the video loads. Is there perhaps a way I could not use the Squarespace default filters but dim it in code that would load immediately?

Thanks!

Hey, I'm having the same issue. Did you find a solution?