frontend - Wordpress - how can I get rid of flicker?

Question

I have a problem with my website page. It used to be okay, but now when I load it in a private browser(Chrome), the page flickers. I tried minifying css, optimizing images..even changing the html structure, but it seems to always have some problem...any ideas how I could fix this? website: https://www.whosmarted.com/

Answer 1

async-hide class creating the issue with opacity property. Overwrite it by

.async-hide {
    opacity: 1!important;
}