how to pre-load color section background image?

Hi, my LCP time is thru the roof and PageSpeed is indicating the issue is with the color section background I use at the top of my page (link in private content), any idea how to pre-load this background image, or any other tips how to improve this score? Thanks!

Edit: now after tweaking a few settings, PageSpeed doesn’t suggest pre-loading anymore, but the LCP time is still very high and it’s mostly Load Delay and Render Delay. Not sure what it is and why it’s so high on that color section.

• This topic was modified 1 hour, 51 minutes ago by 0_o.