Menu display issue on mobile - desktop menu temporaily flashes on page load

Theme vendor came back and suggested adding the below CSS in Drupal as a temp fix. May help someone else. Thanks

@media only screen and (max-width:767px) {
    #superfish-main {
        display: none;  
    }
}

up

I am working on it

Please don't change issue status if patch is not ready

Unfortunately, my approach will have a blinking side effect for normal resolutions.
I have an idea, to render accordeon or select menus for the small screens and show/hide them using media queries, but it will take a lot of time to implement and there could be potential bugs :(